Rifle Scopes GDI PROM Precision Rifle Mount Drops

#51
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body">I contacted GDI about the details of the buy, there will be a significant discount for the HIDE Members, so that has definitely been negotiated by me. However that said, I highly doubt even with the special pricing you'll be putting a Vortex 1-4x in a mount of this type. They are dual mounts, the RMR and the main scope so that is why the price is the way it is. Not to mention GDI are not a low budget mount, they are Made here in the US and not in Asia mass produced so you're gonna pay more for them.

They said they were releasing it this week to us, I figure around $350 per ... but I am still waiting to hear from them for the official release. </div></div>

It looks like a very nice mount; at $350 I think it makes more sense although its still pretty rich. I didn't mean to say I be putting the PST 1-4x in it, I'm actually considering it for the GAP group-buy Bushy HDMR I have coming. My point was simply that at the price on their website it equaled the price of the PST which to me seems like an awful lot for a mount no matter how "good" it is. Maybe LL or someone from GDI could clarify pricing structure going forward. As it's currently presented on their site the mount is $500 and the MRDS adapter is an additional $75.00.

I buy Badger bases and rings so I have no problem paying for quality. I'm just struggling to see how the GDI is more than twice as good as an ADM (SWFA price $179.95) or Bobro (SWFA price $209.95)(Yes, I do realize Bobro doesn't have a 34mm mount yet; if they did I'd probably already own one and wouldn't need to consider the GDI).

I'm not trying to be a dick or crap up the thread. As I said I'm definitely considering the mount...I'm just trying to determine if the value is really there versus the alternatives.
 
#53
Re: GDI PROM Precision Rifle Mount Drops

plong,

you're asking me to answer an unanswerable question...

What makes a person chose a S&B over a Leupold, or NF, what make a Hensoldt worth $3200 when it lacks zero stops and reticle choices ?

GDI is used by the military and most of their work has been with the military, as the USMC uses their RCOM Mount so much of their T&E on this product was geared towards that use ? I am not sure Bobro or ADM can say the same, at least I don't know ? I do know the GDI PROM has been fielded for more than a year, and has gone through many changes, with a lot of R&D. That costs money.

PROMRCOM.jpg


here is the early shot of the GEN 1
PROMGEN1.jpg


As you can see a huge departure from that look, but much of the function remains.

The double throws are taken from mounts like their AW5, which has seen service already

PROMAW5.jpg


Because these double throw levers have seen service on full auto weapon systems, they have to be right, it's a critical element. Not sure you can say the same about the others, but you might --- again, why do I choose Badger mounts over something like TPS, or why choose a Spuhr over a similar model when a Spuhr is close to $450 themselves. Yet, I have several Spuhr and use them a lot.

It's up to the individual to determine what is important to them. I can't say what make you confident in your equipment choices.

I am not asking you buy one, I am only telling you they are available and I have worked with GDI to bring the price to a point for the introduction to the civilian I think will put a lot of mounts in people's hand. After that I believe the mount will speak for itself.
 
#54
Re: GDI PROM Precision Rifle Mount Drops

LL:

Thanks for taking the time for a very detailed response! I'm looking forward to hearing the actual group-buy price. As I said: I'm not trying to be a dick or crap up the thread. I'm just trying to determine if the value is there (for me
wink.gif
). These dialogs help me do so (<span style="font-style: italic">a lot</span>). I'm going to be very interested in hearing how they stack up against the alternatives and whether they turn out to be worth the premium once they get in the hands of more experienced users.

I evaluate value as the best overall combination of Function (suitability for its intended purpose), Build Quality, Durability, and Price; pretty much in that order of priority. I'm definitely willing to pay for quality...but unlike our government I'm not going to be buying any $600.00 toilet seats.

Thanks also for the group-buy opportunity! <span style="font-style: italic">Keep'em coming...
</span>
PLong
 
#56
Re: GDI PROM Precision Rifle Mount Drops

I see what you did there...that mount sure looks sexy as hell on a MWS
wink.gif


Mount looks to be really well made, and your video was very nicely done.
 
#57
Re: GDI PROM Precision Rifle Mount Drops

Pretty snazzy but what happened to the integrated bubble level? That was something I was specifically waiting on. (Love it on my Spuhr but wanted a quick detach mount for my LMT)
 
#59
Re: GDI PROM Precision Rifle Mount Drops

red dot mount is seperate, it bolts to the upper ring half. they list it for a micro-t, RMR, or insight MRDS. I think the MRDS is the same screw pattern as doctor and some others.
 
#61
Re: GDI PROM Precision Rifle Mount Drops

<span style="font-weight: bold">P-ROM L-Model™ (Rifle Optic Mount)</span>

<iframe width="640" height="360" src="http://www.youtube.com/embed/kZIlWek4ej0?hd=1" frameborder="0" allowfullscreen></iframe>

<span style="font-weight: bold">American Made * Patent Pending
</span>

Link to GDI Website - **Buy Here**
697


"Like" on Facebook and win a T-Shirt plus a chance to win a new GDI Mount !

GDI_590x747_web_banner_v3.jpg



Just in time for SHOT Show 2012, GDI is releasing a new telescopic scope mount with an available selection of red dot sight adapter plates to accommodate the Trijicon® RMR, Aimpoint® Micro T-1, H-1, R-1, and Insight® MRDS.

The new, P-ROM L-Model (Rifle Optic Mount), will initially be available in two variants:

· 30mm Ring Diam. l 25 MOA Base
· 34mm Ring Diam. l 25 MOA Base

As with all GDI mounts, the P-ROM L-Model™ (Rifle Optic Mount):

· Comes with our proprietary Auto-Locking Quick Detach (ALQD™) lever system
· Adjusts to out-of-spec M1913 Picatinny Rails
· Has a non-abrading rail lock down feature
· Provides enhanced eye-relief
· Offers a return to zero of .01 MOA

For a limited time only, from December 15th to January 15th, this mount will be offered at an unprecedented 30% discount to our commercial customers – a $500 value for $350. This discount will never be offered again.

Additionally, anyone that "Likes" GDI mounts on Facebook will have the opportunity to be entered into a drawing for a FREE P-ROM L-Model™ (Rifle Optic Mount). *Choice of either variant noted above.

But that's not all! For every 100 new Facebook fans that GDI receives, (starting at 350 fans), we will give-away one of our premium grade, 100% ring-spun cotton, GDI "Gun Metal" T-Shirts to one lucky winner! Give-away will run until GDI reaches 2500 Facebook fans. That's a total of 25 t-shirts that will be given away.....Go to our Facebook page NOW!

At 2500 Facebook fans, GDI will then raffle off two (2) P-ROM L-Model™ (Rifle Optic Mount) models. Winners will be announced during the week of the SHOT Show (January 17th – January 20th)

Visit www.facebook.com/gdimounts, hit the "Like" button, and enter your name in the fields provided. Everyone 100 fans, GDI will announce the winners of a t-shirt. Stay tuned and visit often!
 
#63
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Redmanss</div><div class="ubbcode-body">LL, would it be possible for you to give us a rough measurement on the sight height?</div></div>

My S&B 3-12X50 on the MWS sits at 1- 3/8s to the center of the objective. There is exactly 1/4" from the top of the rail to the bottom of the objective.

50mm clears on a flattop
 
#65
Re: GDI PROM Precision Rifle Mount Drops

Thanks. Definitely picking one of these up for my S&B. Too good a deal to pass up and it will be perfect for the .308 I'm finishing up.
 
#66
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cjgemm</div><div class="ubbcode-body">How does one measure .01 MOA anyway? feeler gauges?</div></div>

When Rifles Only did the test for the RCOM it shot a 10 shot group @ 100 yards that was done by moving the optic from a bolt gun to an M4 where 1000 rounds were shot by the M4 and still the bolt gun moving the on and off shot a .21" group. In a rest, but still that was on, off, on, off, etc with an M4 under it between groups and it was that small.

There is no perceivable shift, shooter error accounts for more shift than was noted using a GDI mount.

Once the weather changes a bit I can repeat a version of the test with this new mount, but the GEN1 were being used for more than a year, including guys given it and shooting matches with no shift issue. I don't have the data from TX on it, but on or off you never have to chase it, and it's not a 1 MOA it really is closer to .01 MOA they have been running them through the ringer for sure.

If you look at the Leupold - S&B video I did the 1-8x was mounted in a GDI and I was on and off between the two and never had to adjust the Leupold out to 550 yards, the S&B needed tweaking with it's removable mount to hit the same target. I couldn't just go when I returned the other mount to the rifle. That day I switched them off several times, the Leupold remained true to the original zero.
 
#69
Re: GDI PROM Precision Rifle Mount Drops

Hey even if you are not interested in the PROM, head over to Facebook and "LIKE" GDI on their page, they are giving away T Shirts and a mount.. especially if you have a FB account, its worth the time and effort.

Who couldn't use something for free around the holidays, if you win a shirt you can give it to your brother in law or your wife or your mistress.

https://www.facebook.com/gdimounts
 
#70
Re: GDI PROM Precision Rifle Mount Drops

Looks like a fantastic mount. Also looking to add a QD setup to my MWS.

Have we confirmed from the company the 1.375" height to centerline for the 34mm version? I've been using a Spuhr mount with an S&B and the 1.46" is just too high for me.

Lastly, is the $350 the intro Hide price?
 
#71
Re: GDI PROM Precision Rifle Mount Drops

So I assume that the variance in the mount zero shift would be swapping and mounting it 100 times, it would shift 1 MOA ? Would that be the correct assumption ? But thinking about it, that is assuming the tolerance stack up was only in one direction.

Regardless, this would be perfect for my applications compared to other offerings out there.

Tag, and definitely in for one !
 
#72
Re: GDI PROM Precision Rifle Mount Drops

So there is no way to buy just the mount without the secondary optic mount for $75 additional dollars? I'd like to try one of these, but not for $425.

Also when I was asking about measuring the 1/100 of an MOA shift (1/4 of a mm or so) I assumed you guys had some fancy computer target that recorded your hits to come up with that number.
 
#73
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cjgemm</div><div class="ubbcode-body">So there is no way to buy just the mount without the secondary optic mount for $75 additional dollars? I'd like to try one of these, but not for $425.

Also when I was asking about measuring the 1/100 of an MOA shift (1/4 of a mm or so) I assumed you guys had some fancy computer target that recorded your hits to come up with that number.</div></div>

I have posted in the other location, the overall group was less than a .25, in fact it was .21" in size... that was overall size between mounting it on and off.

This isn't a case where the manufacturer claims it returns to 1 MOA, this mount was tested for more than a year. By a lot of different people and the return to zero is pretty much exact. As well the other GDI which use the a similar system have been tested by several contracting companies with the same results.
 
#74
Re: GDI PROM Precision Rifle Mount Drops

Just heard back from the GDI folks with the following:

"The P-ROM optic centerline axis above rail height is 1.535"."

Was hoping for something in the 1.375" height range which should clear a 50mm objective on an S&B.
 
#75
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 2ndamendfan</div><div class="ubbcode-body">I think the MRDS is the same screw pattern as doctor and some others.</div></div>
I can confirm that the screw pattern and "footprint" are the same for the Insight MRDS and the Docter RDS. I have Docter's and I use both the MRDS mounts and MRDS protective hood (a bit of excessive top spacing on the hood with the Docter's since the Docter's are shorter).

So what's the "Hide" price on these mounts? $350?
 
#76
Re: GDI PROM Precision Rifle Mount Drops

Yes $350

The scope is a 50mm S&B in the video you can see it works well and clears without being too high.

The NF is a 50mm as well.. both clear with no issue, and I gave you an exact measurement to the center of the objective mounted on a rifle
 
#77
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cjgemm</div><div class="ubbcode-body">So there is no way to buy just the mount without the secondary optic mount for $75 additional dollars? I'd like to try one of these, but not for $425.

</div></div>

I emailed them yesterday and got an email back saying there was a mistake with the webpage that required you to purchase a red dot mount. It's fixed now and you can order the mount without the red dot plate.
 
#79
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: redirt78</div><div class="ubbcode-body">I thought they were $350 as shipped to LL, with the secondary optic mount. I still want one and will be working on it until Jan 15th rolls around.</div></div>

Apparently that was my misunderstanding, I didn't realize they separated the red mount out as an accessory.
 
#80
Re: GDI PROM Precision Rifle Mount Drops

We should start an 8 paged thread full of bitching til we get the mount piece thrown in for the the $350 price tag... Just kidding

Seriously, just kidding. Just making fun of a different thread where people whined until they got their way (f'n ridiculous).


Saving $150 on this mount is a hell of a deal.
 
#81
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: redirt78</div><div class="ubbcode-body">We should start an 8 paged thread full of bitching til we get the mount piece thrown in for the the $350 price tag... Just kidding

Seriously, just kidding. Just making fun of a different thread where people whined until they got their way (f'n ridiculous).


Saving $150 on this mount is a hell of a deal.</div></div>

That is funny, I recommend you come to Shot show, I will introduce to GDI and you can ask Marco in person, lol. It will be worth the trip I promise.
 
#82
Re: GDI PROM Precision Rifle Mount Drops

LL, do you have any idea if Troy (or similar) backup irons would fit under the <span style="text-decoration: line-through">objective</span> eye piece on your setup? Looks like it, just checking.
 
#86
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neal0124</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cjgemm</div><div class="ubbcode-body">So there is no way to buy just the mount without the secondary optic mount for $75 additional dollars? I'd like to try one of these, but not for $425.

</div></div>

I emailed them yesterday and got an email back saying there was a mistake with the webpage that required you to purchase a red dot mount. It's fixed now and you can order the mount without the red dot plate. </div></div>

Thanks for the update.
 
#87
Re: GDI PROM Precision Rifle Mount Drops

Lots of comments here, on Facebook and YouTube regarding the price of this mount. Let me give you my take.

First off I don't think the price is high when you look at the historical percentages. Back in the day people where buying a $1200 Leupold Mk 4 and to get the most out of the "system" they bought Badgers which range from $150 to $200. In a static mount both today and yesterday Badgers are the Gold Standard. So you had / have people putting $1200 scopes in $200 rings to make sure the system worked. There were and are plenty of Sub-$100 choices on the market but for security you know the better the mount the less likely you'll run into a problem down the road. Back then you had $2000+ rifles to go with your $1200 scope.

Fast forward:

Today we are investing in $4000+ rifles and using $2500+ scopes. Also we are asking the mounts to do more. We want Quick Attach / Detach, we want to piggy back secondary optics on them and we want to include other features like found in the Spuhr and GDI which both tip the scale over $450. One has throw levers the other doesn't but still the direction they are heading is very similar. Bulletproof - precision mounting that allows the operator much more flexibility than traditional mounts of the past.

Are there throw lever mounts for half the price on the market. Absolutely, would I personally use them, not really but maybe as a stop gap. Sure I have them and I have used them but I have also seen them fail. Not catastrophic as in break, but come loose. Which in a precision rifle system is equal to failure. Consider this, a 20 minute base gains 20MOA at 100 yards by moving the rear up about 15 thousands of an inch. Small errors at the rear of the scope compound dramatically.

So what are you asking the system to do, you want the scope to be held secure and you want to be able to return to zero, not just close to 1 MOA but as close to 0 MOA as mechanically possible. That is a pretty hefty request and one I don't think people realize most aren't up to the task. Why, because for many people the idea of a QD mount on their $3000 AR10 type rifle is more fashionable then the actual process of taking it on and off. They have the ability but barely use it. And that use should not require the end user to add a generous amount of loctite to the screws in order to get them to work as advertised. Or require you to carry a specialized tool to constantly snug them up. Chasing them is not working in my opinion.

Making the mount of superior parts, with high end machining takes money. It's an expensive practice. Sure you can ship a prototype over to china and ask them build something close but really is that what the American Tactical Shooter wants, or do they want the very best made here in the US.

For those who say, "hey i have used "X" brand for years with no issue at all". Great consider yourself lucky and drive on. But take an example from the recent Magpul Video. The first 15 minutes of Disc 1 has Todd selling you on the LT QD mounts. He goes to lengths to tell you those are the only mounts he uses and why. Fast forward to the first 5 minutes of Disc 2 where Chris tells Todd they need to rezero in because his LT Mount came loose. This is common, I have personally experienced it and I have seen it happen on the line. This prompts them to go into the scope swap scenario to cover up the fact that after professing great things from the mount in less than 24 hours they were loose. Reason one to invest in a better system. Tactical Viability depends on the system working under adverse conditions. That viability costs money to achieve.

I get it, they are pricey, but the quality of the system is all that is at stake here. If any part of that system breaks down the whole thing fails. If you invest in a high dollar system, decide to fly half way across the country only to find out your zero is off or your scope came loose half way through a competition. It may only have cost you money. But now what if your life or someone else's life is depending on that system to work, does $90 for a mount cut it when you are trying to reach 1000 yards ? Nope, those $150 mounts were designed for an AR15 platform maybe shooting out to 300 yards, mostly inside 100 yards, not out to 1000 yards where errors are magnified. That is the major difference every one seems to gloss over. Sure they work on your AR15, but will they still work on your AR10 out to distance -- maybe ?

I get it, in this economy these are pricey, but they are being asked to do more under the same conditions using higher end equipment. At least that is how I see it .
 
#88
Re: GDI PROM Precision Rifle Mount Drops

Frank,
Nicely written and explained.
Thanks.
Edit:
It appears this mount is designed primarily for the AR platform, yes?

Maybe I'm just too old, but I never had the need to remove/swap an optic on a duty rifle. Is the quick attach/detach something that's desirable for competitions? Do you guys that compete really swap out optics occasionally or frequently in a match?

I'm getting the itch for an LMT MWSE. This mount looks well made and Frank's reasoning is sound for spending the $$$. I'll probably leave mine locked/screwed down. GDI looks good to me.

Any links to match sites or videos that show the utility of swapping?
Thanks.

 
#89
Re: GDI PROM Precision Rifle Mount Drops

Does anyone know if these will work with USO SN-3 T-PAL's? Just found that the ADM mounts won't work with T-PAL's due to lack of spacing between the rings.
 
#90
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: recce556</div><div class="ubbcode-body">Does anyone know if these will work with USO SN-3 T-PAL's? Just found that the ADM mounts won't work with T-PAL's due to lack of spacing between the rings. </div></div>

I emailed GDIEngineering.com and got a response that it will fit. The saddle gap is 3 1/8"
 
#91
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: John in WYO</div><div class="ubbcode-body">Frank,
Nicely written and explained.
Thanks.
Edit:
It appears this mount is designed primarily for the AR platform, yes?

Maybe I'm just too old, but I never had the need to remove/swap an optic on a duty rifle. Is the quick attach/detach something that's desirable for competitions? Do you guys that compete really swap out optics occasionally or frequently in a match?

I'm getting the itch for an LMT MWSE. This mount looks well made and Frank's reasoning is sound for spending the $$$. I'll probably leave mine locked/screwed down. GDI looks good to me.

Any links to match sites or videos that show the utility of swapping?
Thanks.

</div></div>

it is becoming more popular to switch the optics and I don't think you see much in the way of videos beyond some stuff I have done, or what they did in the Magpul Precision Rifle video swapping the scopes around. It has some potential when you consider back up optics in place of iron sights. Working Tool-less in the field can be advantageous.

But more and more units are turning to mount that can removed on and off, some for transport, ease, others for reasons only they can explain.

When you look at the AR world, it has been common to have QD mounts for a while now. ADM, Bobro, Larue, all make them and have for some time. It's probably a bit more Gucci than practical. My personal needs are a bit different so I find it very useful, especially because I work with so many different platforms, being able to swap optics around has it's advantages.

it can also be a cost saving feature provided you have the ability to re-zero to a different platform. Swapping an optic from a 308 to a 338 is one example. But to be completely honest I can't say who started the trend, but it is out there in force that is for sure. Probably the LaRue Marketing machine is most responsible .
 
#92
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tuff</div><div class="ubbcode-body">I emailed GDIEngineering.com and got a response that it will fit. The saddle gap is 3 1/8" </div></div>Thanks Tuff, I had a lapse in brain waves and didn't even think of doing that...
 
#94
Re: GDI PROM Precision Rifle Mount Drops

I had the same credit card issue. I sent them an e-mail and they gave me a number to call inorder to place my order.

They were very friendly.
 
#95
Re: GDI PROM Precision Rifle Mount Drops

Lowlight, could you please make good photos of locking mechanism? Can't understand how its lock... Can it be unexpectedly unlocked if rifle dropped? I'll appreciate this much. Really interested to obtain one, but some unknown details...
 
#96
Re: GDI PROM Precision Rifle Mount Drops

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Heltsley</div><div class="ubbcode-body">
Anyone else have a problem with the website paying with a Credit Card. I can not select a type of card and thus can not pay....
</div></div>

No problem here...
 
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