Piston AR rail options?

[LittleLebowski]

Asking for my brother. The only viable upgrades are purpose built rails, right?

[BWT]

... For your brother?

Thinly veiled lies!

I feel like I don't even know you anymore!

All kidding aside, I'd ask the piston manufacturer directly. They're all proprietary designs, clearances, etc. might be able to find for certain designs and not the others.

What Manufacturer is it?

[LittleLebowski]

Adams Arms 5.45 carbine.

[BWT]

Looks like

Troy is GTG

http://http://www.ar15.com/forums/t_..._arms_kit.html

And atleast some of the DD are good to go,

http://http://www.ar15.com/archive/t...f=126&t=512661

I don't have first hand experience, but that's what I found with a google search.

You both loving the 5.45 ARs these days?

[LittleLebowski]

He's been running 5.45 AKs for a while. He bought the AA 5.45 because that was what he could find. He's 6'5 and a 1/2 so he wants more rail

[Sadmin]

I have looked before as well, but I finally just got the S&W and Spikes -

Per AA:

Q. Which handguard/rails will not work with this system?
A. Any tubular free-floating handguard (or rail that uses these handguards for their base). Any handguard that covers or extends over the gas block or in front of the gas block will not work with our system. Any handguard that uses a barrel nut longer than a standard milspec barrel nut. These are examples that have been found to not work:
YHM rails - use a tubular handguard as a base
GG&G free-floating rails - use a tubular handguard as a base
Vltor VIS - modular upper/rail that can not be modified
Daniel Defense FSP (Except the 9.5 FSP Lite)
LaRue Rails - uses oversized barrel nut
MI Two Piece Forearm Extended Carbine Length - continues in front of the gas block
MI One Piece Forearm T Series - uses oversized barrel nut
Troy Industries 10' MRF-MX - extends over a low profile gas block

Cheers

[sammage]

LL, some of the Centurion Arms offerings are noted as being compatible.

http://www.rainierarms.com/?page=sho...roduct_id=2482

[LittleLebowski]

Thanks, gents. My brother doesn't have internet for the most part and your research helps.

[roadsiderob]

My roommate & I built 2 uppers with AA piston kits. I believe they were carbine length. We used Samson rails. The rails are too small to fit over the gas block...the flash hider & gas block must be removed to install. The first one had the rail behind the block. The second was a Samson rail designed specially for the AA piston kit that was cut out on top for the gas block but enclosed it on the bottom with slots cut to allow access to the gas block mounting screws. Both worked well and clamp securely to the standard barrel nut with a clam shell adapter after removing the delta ring. Both are solid with no movement. I would use them again.

[Dan_S]

Thanks, gents. My brother doesn't have internet for the most part and your research helps.

What, satellite went down again, or just no computer...?