Recommend me a Gas Piston Upper

[MUKAK]

i have a CMMG gas piston upper and its my fav upper to shoot

[NulodPBall]

just piston upper no conversion. I pretty much sold on the Adams Arms piston upper. Thanks for everyones input!!

I also have an Adams Arms...love their product but don't expect quick answers if you have questions for the factory...but once you contact them, they will do you right.

A friend of mine had tried several gas piston setups, including LWRC and for various reasons, he's decided that Adams Arms is the gas piston setup he does current and future builds with.

[1CavScout]

Since it hasn't been mentioned, I'll throw he HK MR556 piston upper into the mix. It's the only piston AR I have any experience with. If the heavy bull barrel is a turn off, IGF does an amazing job reprofiling them.


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^^^ This. Just ordered another HK upper, and it's going to IGF.

[BajaJames83]

for the money the adams arms is a good option.
but what kind of budget you got?

[motox917]

Be sure to check out Addax they are a cali company and make some of the best piston uppers around.

+1^^ Addax makes an awesome piston upper

[G21Shooter]

Midway has CMMG gas piston uppers on stock, quality stuff.

http://www.midwayusa.com/product/810960/cmmg-ar-15-m4-lep-ii-a3-flat-top-gas-piston-upper-assembly-556x45mm-nato-1-in-9-twist-16-barrel-wasp-melonite-finished-chrome-moly-matte-with-m4-handguard-flash-hider-pre-ban

[JDay]

I'd just buy a Sig 556. It was designed to be a piston driven rifle. It's the US market version of the SG552.

[Arnelcheeze]

Running a Stag 8, same as the CMMG piston system. Runs great.
Stag said while they were the same system in the beginning, Stag now makes their own but is exactly the same as CMMG so the parts are interchangeable.

[ky2970]

What's the difference between short stroke and long stroke? I take it there's a difference in piston stroke, but what functional difference is there?

Huge Grant pretty much covered it all. AK DNA in the ergonomic, modular AR platform. I can tell you, from personal experience, that PWS makes a quality product. Read up on the Mk2 (.308) version on Sniper's Hide. Also, they're not front heavy like most piston guns.

[GG&M]

for the money the adams arms is a good option.
but what kind of budget you got?

about 800 ish. yeah i think Adams Arms it is!

[joker713]

I'm not a fan of long stroke piston designs for the AR. If you watch super-slo-mo videos of AR's firing, there is a TON of flex between the upper receiver and barrel. This would translate to additional flex of the piston if attached to the BCG over the course of the weapon cycling. I think there is a good reason why the best designers chose the short stroke piston design when redesigning the AR for the 21st century. Every single one of the entries in the last two USMC and Army competitions for replacement carbines have been short stroke piston designs.

-W

http://youtu.be/8j_jMVynheY

[BMWguy206]

http://youtu.be/8j_jMVynheY

Thanks for the video!

[drew3630]

I bought a PWS Mk 116 upper from AIM as a Christmas gift to myself
Haven't had a chance to shoot it yet.

No one else has mentioned it but Huldra Arms makes a 14.5 in upper for $849.

http://www.huldraarms.com/uppers/product_d786a54be56c/

It's gotten some decent reviews on Arfcom

[Synergy]

Be sure to check out Addax they are a cali company and make some of the best piston uppers around.

+1^^ Addax makes an awesome piston upper

My Addax is my first GPU and it is great. I have had zero problems. 18" With the Vltor MUR-1 and a Battlecomp 1.0

[bearstatearmory.com]

Where does the Core15 fall in line of quality?

Edit:
I like the Adams Arms stuff but I don't like that all of their barrels are 1:7 twist.