Rifle Scopes Opinions on LaRue QD Scope Mounts?

G

gewgaw

Private
Minuteman
Feb 7, 2009
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0
Los Angeles, CA
#1
Anyone have (or had) a LaRue quick detatch scope mount that they've used? I'm thinking about getting their model SPR-S LT-158 for mounting an S&B scope onto an AR-10T flat-top, and I am wondering what experiences -- good or bad -- people have had with LaRues. (I currently have it mounted with Badger 34mm rings to a Badger 20MOA forward cant base.)

I am mainly concerned about return-to-zero capabilities.

Also, does the LaRue have a forward cant to it, or will I need to keep my Badger 20MOA base?
 
#2
Re: Opinions on LaRue QD Scope Mounts?

LT scope mounts are great, and completely bombproof. If you following the instructions when adjusting the mounting levers, the mount will return to zero every time. Plus, you can't beat the warranty.

The SPR-S has 10MOA of cant built in.
 
#8
Re: Opinions on LaRue QD Scope Mounts?

+1 on all the positives. Only thing to note, is if you have it tightend down per direction, the cams will mar the finish on the underside of the receiver. A friend of mine takes his on and off all the time and thei finish of his AR is a little chewed. The cams are steel and the upper is Al, so guess what looses that battle.

I use a little lithium grease on the cam to reduce the marring. Lock them down and wipe away any excess.

I use mine so I can get it off quick should the optic fail at a bad time, flip up the BUIS and I'm back at it.
 
#10
Re: Opinions on LaRue QD Scope Mounts?

I use a LaRue CCO mount on my duty rifle. It is an excellent piece of gear.

Yes the levers will mar the underside of the pic rail, but if you saw the rest of my rifle you would know why I don't care.

I have thrown my rifle across a concrete floor and had not discernable zero shift. I have removed and replaces the Aimpoint and CCO mount several times during cleaning and not had any RTZ issues.

Lastly the company is a joy to deal with. If you call them with a problem THEY WILL MAKE IT RIGHT. I have yet to hear of anyone who was not completely satisfied with LaRue's service. I had an issue with the way I was using one of their products. There was nothing wrong with the product it just conflicted with what "I" was doing. I called to ask some advice and they put me through to Mark. He went above and beyond what I expected to resolve my issue.

I will be using a LaRue mount on my AR-10 when I get it done. I like the fact that I can quickly jettison the optic and use irons in case of a failure.
 
#12
Re: Opinions on LaRue QD Scope Mounts?

I have an ADM and really like it.
The dual locking levers are easily adjusted for tension and the rings can be replaced with a few different sizes in case you change optics. Solid, repeatable, well built.
 
#13
Re: Opinions on LaRue QD Scope Mounts?

Anyone out there with LaRue LT-107's who have mounted them on AR-10s? (I know they're intended for 50's, but it seems like it's perfect for what I need -- 30 MOA cant, 1.45" centerline...)
 
#15
Re: Opinions on LaRue QD Scope Mounts?

You cannot go wrong here. Everything is guaranteed - the warranty cannot be beat. I have been using his mounts on my primary long gun for quite awhile and the only errors have been my own. Same with my defensive purposes only faster shooting rifle. No worries with zero retention. His customer service is among those also known as the best in the business.
 
#16
Re: Opinions on LaRue QD Scope Mounts?

LaRues are good stuff!

The only complaint I have is that they need to make one a bit lower. Using the LT158 on my SPR was still a tad too high. I wound up trying a USO mount and it is the perfect height (for me) at 1.20".

For heads up CQB optics the 1.5 height of the SPR (LT104) is great, but for down on a scope I need lower.

I wish I could get a LaRue in 1.2" height!!
 
#17
Re: Opinions on LaRue QD Scope Mounts?

I think I've got like 3-4 SPR-S mounts. They're awesome for ARs.

Larue has such awesome customer service, I wouldn't mess with anything else. I also think the Larue mounts are the most refined of all the QD mounts. All hardware engages on steel bushings and inserts.

ADM just looks like a clunky knock off to me.

Remember, if you're using the larue, make your throw levers tight. They return to zero much better if tightened. I keep the gouging down and make the levers easier to throw by putting some moly lithium grease on the spot where the clamp engages the underside of the rail.
 
#18
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">I wish I could get a LaRue in 1.2" height!!</div></div>

Yeah, that's my ONLY hesitation with the LaRue mount! I really would like a 1.25" or 1.20" centerline... what model USO mount did you get, and do you like it? Is it a QD?
 
#19
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Salmonaxe</div><div class="ubbcode-body">I think I've got like 3-4 SPR-S mounts. They're awesome for ARs.</div></div>

How do you like the height of the scopes in the SPR-S?
 
#20
Re: Opinions on LaRue QD Scope Mounts?

I like them low. Could be lower, but they're usable. They just barely clear troy BUIS with most scopes. (Which is cool)

All the others are unnecessarily high. So the added 10MOA of forward cant and lower height makes it the no-brainer SPR mount for me.
 
#21
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Gewgaw</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">I wish I could get a LaRue in 1.2" height!!</div></div>

Yeah, that's my ONLY hesitation with the LaRue mount! I really would like a 1.25" or 1.20" centerline... what model USO mount did you get, and do you like it? Is it a QD? </div></div>

Posi-Slide and Lock MKI (came with a SN4S I bought). The MKI is named Posi-slide because it needs to slide on or off the end of a pic rail. If your setup has a continuous rail space, ie flat top with 4 rail forearm, one end must have room for the mount to slide off/on. If your BUIS are mounted on each end it won't go on/off. I went to a JP Vtac forend so this wouldn' be a problem.
It is repeatable as my LaRues have been, but that is a function of correctly torquing the clamp. I use hand tight plus 1/4 turn and it repeats w/in .5moa or so.
USO also makes a tip off version to alleviate the afore-mentioned scenario.
 
#22
Re: Opinions on LaRue QD Scope Mounts?

Thanks to all for their input... I put in an order for a LaRue SPR-S LT-158 this morning. Looking forward to getting it next week!

Now my Badger 34mm rings and AR riser rail are soon to be homeless... anyone interested in giving them a good home?
smile.gif
 
#23
Re: Opinions on LaRue QD Scope Mounts?

Ooh, is the scope that's going in it 34mm? If you're interested I have a Tactical J-Point / Dr. Optics / FastFire Attachment LT-137 ring that's in 34mm.

The only issue I have is that I will only have 3 34mm rings.
 
#25
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">LaRues are good stuff!

The only complaint I have is that they need to make one a bit lower. Using the LT158 on my SPR was still a tad too high. I wound up trying a USO mount and it is the perfect height (for me) at 1.20".

For heads up CQB optics the 1.5 height of the SPR (LT104) is great, but for down on a scope I need lower.

I wish I could get a LaRue in 1.2" height!! </div></div>

1.495"
2ip6yo.jpg
 
#26
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Forty-One</div><div class="ubbcode-body">I live by very simple rules. If it comes off - Larue. If it stays on -Badger.</div></div>

I love it! You have a good point. Especially since I'm actually thinking of building up another AR-10. I know, I must be insane to do that right now.... haha
 
#27
Re: Opinions on LaRue QD Scope Mounts?

If you want a detachable, LaRue is great. For optics that I want the utmost confidence in, I don't use detachables. It's just another moving part that can shift. Nightforce Unimount is my favorite.
 
#28
Re: Opinions on LaRue QD Scope Mounts?

i have one on a AR10 SASS with the 10MOA almost all my mounts are LARUE i feel they are the best yes they may mar the rail some.
if it is getting chewed up it is to tight .
what is really good is the fact you can adjust the lever as not all rails are the same spec
 
#30
Re: Opinions on LaRue QD Scope Mounts?

Hey guys, thanks again for all your advice... I wanted to update you on the LaRue SPR-S. Got it today, along with an awesome "Tactical Beverage Entry Tool" and some LaRue Texas Dry Rub (for BBQ'ing ribs!)... damn they know how to throw freebies in, don't they?

Here's some pics of how it looks... perfect fit!
larue1.jpg

larue2.jpg

larue3.jpg


 
#31
Re: Opinions on LaRue QD Scope Mounts?

Bumping an old post...

It looks like the LT-104 mounts the scope centerline at 1.5" high. Like others here, I would like something around the 1.2" range. For those with the SPR-S (LT-158), how high does it mount the centerline of a 30mm scope?

Any other good QD 1-piece mount options that are lower than the LT-104? The Bobro looks interesting but I haven’t found any specs on it.
 
#32
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RobG</div><div class="ubbcode-body">Awesome. Trying to find <span style="font-style: italic">anything</span> negative to say about Larue stuff is near impossible. </div></div>

Oh come on,,those dillos breed,,not enough rub,,have had to give my breeding hats away too...
wink.gif
 
#33
Re: Opinions on LaRue QD Scope Mounts?

I've had good luck with the LT 123 2 piece rings holding zero, and they are 1.273" high, on an AR only the KAC300M BUIS will fit under a NSX 3.5-15X50 scope's ocular.
 
#35
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BAMCIS</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RobG</div><div class="ubbcode-body">Awesome. Trying to find <span style="font-style: italic">anything</span> negative to say about Larue stuff is near impossible. </div></div>

Oh come on,,those dillos breed,,not enough rub,,have had to give my breeding hats away too...
wink.gif
</div></div>


+1,,, Need a much bigger bottle of Rub. Thats all I buy is LaRue mounts.
cool.gif
 
#38
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: vmpgsc</div><div class="ubbcode-body">LT scope mounts are great, and completely bombproof. If you following the instructions when adjusting the mounting levers, the mount will return to zero every time. Plus, you can't beat the warranty.

The SPR-S has 10MOA of cant built in. </div></div>

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RobG</div><div class="ubbcode-body">Awesome. Trying to find <span style="font-style: italic">anything</span> negative to say about Larue stuff is near impossible. </div></div>

LT-104 with Hensoldt 4-16FF, on top of 338Lapua DTA didnt work too well.

Scope moved, and tightening didnt help. Nasty marks on tube now.
Measuring showed that rings weren´t perfect circle but 0,1mm/0,004" off. Lining itself was ok.
Lapping didnt help, scope still moves no matter how tight you turn screws.

You can imagine what my buddy thinks about LaRue products now. I wouldnt use it in heavy-recoil rifles like 338LM is.
Got one 104 in my AR15, no problems.
 
#39
Re: Opinions on LaRue QD Scope Mounts?

What I really like about Larue products is that they mill out unnecessary metal, making their mounts very strong (first and foremost) but then also light in weight.

There is much more than that that I like, but everything else has been mentioned. Top notch products and CS. It's surprising to hear JL's experience. Maybe should have given Mark a chance to make good on it.

Any process involving humans is prone to error, no matter how small the margin.
 
#40
Re: Opinions on LaRue QD Scope Mounts?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JL</div><div class="ubbcode-body">
LT-104 with Hensoldt 4-16FF, on top of 338Lapua DTA didnt work too well.

Scope moved, and tightening didnt help. Nasty marks on tube now.
Measuring showed that rings weren´t perfect circle but 0,1mm/0,004" off. Lining itself was ok.
Lapping didnt help, scope still moves no matter how tight you turn screws.

You can imagine what my buddy thinks about LaRue products now. I wouldnt use it in heavy-recoil rifles like 338LM is.
Got one 104 in my AR15, no problems. </div></div>

Sounds like he might have tried to tighten the mount rings like a conventional rings. I have seen this more than once. With LaRue mount rings you tighten the bottom completely then the top.
 
#41
Re: Opinions on LaRue QD Scope Mounts?

I have several outfits with Larue QD mounts and they are top notch. Return to zero is excellent.

I have one American Defense, it was on the scope-a US Optics, when I bought it from a member here. I have hed it on and off the weapon a number of times and it is excellent also.

Make sure when you order from Larue that you are correct in the type of scope and the tube size, and they will send you the right gear. If ir is wrong regardless of whose fault it is, they will take it back and send you the right one. Outstanding customer service!!!!!!!!!!!!!!
 
#43
Re: Opinions on LaRue QD Scope Mounts?

Like marsh1 indicated, the only "issue" I've encountered with Larue mounts is that you absolutely have to first tighten the bottom completely (I torque mine to 37.5 in-lbs as verified by a Snap-On torque wrench) and <span style="font-style: italic">then</span> tighten the top.

I certainly don't consider this a "problem", but it is worth noting.
 
#44
Re: Opinions on LaRue QD Scope Mounts?

Talked to Tyler at Larue Tactical today to order up an LT-107. He mentioned that there is a mount that doesn't show on the site: <span style="font-weight: bold"> LT-112</span>
Similar to the LT-111 but with 20MOA built-in. FYI y'all...
 
#46
Re: Opinions on LaRue QD Scope Mounts?

For those that have the SPR-S (LT-158) is it noticeably lower than the LT-104? I have read that the LT-158 mounts a 30mm scope at 1.42" and the LT-104 is a 1.5" centerline. I prefer the lower LT-158 for a better cheek weld, but don't really want/need the 10 MOA of elevation. So if it's not all that different, I will just get the LT-104.

Which one do you prefer and why?

This is for mounting a Vortex Viper PST 2.5-10x44 on a Sig 556, but the combo max eventually be moved to a FN SCAR.
 
#49
Re: Opinions on LaRue QD Scope Mounts?

is there a problem if you tighten them tighter than the 45degree engagment on the instructions? is there a ",,too tight"??
 
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