PRI Rails and forearms

#3
Re: PRI Rails and forearms

How much does it raise the rail? Has it been a problem adjusting to the new height? Did you have to adjust your sights at all? Any pictures? Im sure it would be the same, just a little longer.
 
#4
Re: PRI Rails and forearms

No one has this setup on this site? Is there something bad about PRI? Do their products hold up, or will they start to chip and flake over time?
 
#6
Re: PRI Rails and forearms

ASM1, does the rail bother you at all when using the iron sights? Im debating on using the rail with the front sight clearance or the full length rail like the link Re25 posted. I want to use the Diamondhead sights, and thats my biggest debate, using the full length rail, or one with the short rail up front for sights.
 
#7
Re: PRI Rails and forearms

ram4x4 if you're looking for something other than an exact Mk12 SPR clone, check out the Mega Arms MTS upper. It is monolithic and, like the PRI, it has the option to add rails to the sides and bottom of the forend as you please.

I've gone for this on my new build rather than the PRI.

I really like the PRI but was worried that (a) it is not monolithic and I've had problems with other handguards coming loose in the past and (b) By the time you've got a scope mounted you've added a lot of layers of mount - receiver to PEQ to scope ring/mount. Seems like a fair amount of room for error to me?

The MTS doesn't look as "chunky" as the PRI but I can live with that.

I got it a couple of weeks back and the quality looks really good - it is now with Pete at Roedale for the build.

It's available in CAR, mid-length and rifle length versions.

http://www.megamachineshop.com/armscatalog/MTS-MODULAR/loader.html
 
#8
Re: PRI Rails and forearms

I apologize, I should have been more specific with my original post. I have an Armalite AR-10, full length model. So that rules out Mega, dammit. Got a little excited there for second. I am wanting to make my AR10 like an Mk12, just bigger. The barrel is getting chopped to 18" right now, so Im trying to decide on what fore arm to use. I have narrowed it down to PRI and the 15" SWS E1 forearm. I know SWS is top notch, but I have not seen anyone with the new 15" model.

http://superiorweaponssystems.com/E1-15.htm

I like this setup because I dont care much for side rails except upfront. Only bad thing about this fore arm, is there is no room for a grip, but I could live with that.

Has anyone used the 15" model from PRI? Im sure the rails I originally posted wont work, but I was curious if anyone was impressed/satisfied with that model.
 
#9
Re: PRI Rails and forearms

No problem....keep it in mind for the next one!
wink.gif
 
#10
Re: PRI Rails and forearms

This one is not mine, but after seeing the pic and PM'ing back and forth with the owner/builder, it inspired me to start a build similar to it very losely based on a Mk12-type AR-10 carbine (mine is still in the build stage unfortunately...awaiting a barrel/bolt and a few other parts/accessories so I don't have pics of mine):

2lk8xp4.jpg


This pic shows a standard Armalite AR10A4 Carbine upper with 16" barrel and AAC Flash hider/suppressor mount, PRI AR-10 Carbine Hanguard (Gen III), PRI Gen III AR-10 Top Rail with Sight Relief/Clearance.

Having used the PRI handguards/rails on other rifles, including a Mk12 MOD0 clone, I can tell you that they are excellent components, they mount up solidly and stay put! There were some issues with early versions of the PRI handguards working lose under fire, etc., but those have long since been resolved and the newer equipment does not have any of those issues.

I will tell you that if you plan on mounting a large objective scope (or using an ACOG with a mount similar to the one in the pic) in conjunction with either the rail pictured or the SPR rail that you will end up with a chin weld instead of a cheek weld (absent using a Magpul PRS or other stock with an adjustable comb)! I am mounting a smaller obj scope in Larue LT-719 ultra-low rings which keeps the optic low enough that a good cheekweld is achievable. I am also using a lower profile rear BUIS that does not stick up as high as the ARMS unit in the above pic which again, allows for a lower scope mounting position. I also like the relieved rail in the front for the same reason...keep the BUIS out of the way and the top of the BUIS level with the rail unless you need to deploy them.

As to your concerns with not being able to mount a VFG, PRI sells accessory rails in extra lengths (5.5" and 8.5"), instead of the standard 6 o'clock 3" rail, which provide room for a bipod in the forward-most position of the rail with room for a VFG behind that if you want to run one.
 
#11
Re: PRI Rails and forearms

Thats what I was concerned most about, the issue with the cheek weld and raised rails. I have the A1 stock right now, was thinking of the VLTOR Emod or LMT Sopmod stock. But I think I remember seeing an A1/A2 style stock with adjustable comb. I cant remember where though, maybe it was just a bolt on piece instead of a complete stock. I havent decided between the ACOG or a scope yet. But that will be later.

About the VFG, I was talking about the SWS E1 15" model, it has knurled grips on the sides and bottom, and only has what looks like 2 inch rails where it bolts to the barrel nut. Thats just too close to the lower for a useful grip, atleast looks like it. I have not handled or seen the 15" model other than the single picture on SWS website.

I definitely appreciate the info ORD. I do have a big head, so maybe the cheek weld wont be a problem with the PRI rails. I gotta get my hands on one to really check it out. Maybe someone at the gun show next weekend will something.
 
#13
Re: PRI Rails and forearms

2.165 O.D. ON THE SLICK ERIA not the rails..

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: krm375</div><div class="ubbcode-body">Whats the Diameter of the PRI tube? for the AR 10/ DPMS </div></div>
 
#14
Re: PRI Rails and forearms

the rail is .450 or so thick add 1.25" rings and you have 1.650" or there abouts on flat top to center optic,thats perfect for me and it will clear a 40mm scope easy.. <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ram4X4</div><div class="ubbcode-body">Thats what I was concerned most about, the issue with the cheek weld and raised rails. I have the A1 stock right now, was thinking of the VLTOR Emod or LMT Sopmod stock. But I think I remember seeing an A1/A2 style stock with adjustable comb. I cant remember where though, maybe it was just a bolt on piece instead of a complete stock. I havent decided between the ACOG or a scope yet. But that will be later.

About the VFG, I was talking about the SWS E1 15" model, it has knurled grips on the sides and bottom, and only has what looks like 2 inch rails where it bolts to the barrel nut. Thats just too close to the lower for a useful grip, atleast looks like it. I have not handled or seen the 15" model other than the single picture on SWS website.

I definitely appreciate the info ORD. I do have a big head, so maybe the cheek weld wont be a problem with the PRI rails. I gotta get my hands on one to really check it out. Maybe someone at the gun show next weekend will something. </div></div>
 
#15
Re: PRI Rails and forearms

That sucks ass ASM1, did the forearm get damaged at all? That looked like a hell of a drop. Atleast everything works ok, except for the bipod of course. Thats a good hit, Id like to see if anything happened to the forearm. That just might sell me if there is no damage, with a quad rail, I would assume you might chip some rails. I appreciate the quick post, reassures me PRI is top notch.
 
#16
Re: PRI Rails and forearms

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ASM1</div><div class="ubbcode-body">2.165 O.D. ON THE SLICK ERIA not the rails..

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: krm375</div><div class="ubbcode-body">Whats the Diameter of the PRI tube? for the AR 10/ DPMS </div></div></div></div>

Thanks for the info
 
#18
Re: PRI Rails and forearms

I use Krylon,I hear a Better paint is around in rattle can.Honestly the Krylon has better performance to alot of bake on coatings and I can touch it up after allot of wear and tear and match it to my AO and time of year.

 
#19
Re: PRI Rails and forearms

Not to try and jack the thread, but what color is that?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ASM1</div><div class="ubbcode-body">PRI is top KIT !

I have 1 PRI genIII HAND guard rifle PRI folding sight/block,Recce rail ,8,000 ROUNDS + on this set up and its solid.

There New BUIS sights are nice !
imageqvv.jpg

By asm1 at 2010-11-04

</div></div>
 
#25
Re: PRI Rails and forearms

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Hellbender</div><div class="ubbcode-body">Yes, my gas system is 2" extended. </div></div>

whats on the side of the rail ?
I see a quick cuff and some type of plate ?

What are the specs on that barrel ?
 
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