Looking for info on AR15 gas piston uppers....

[aggie97]

Looking for info on the different brands, pro's, con's and which ones to stay away from.

Not interested in looking on AR15.com for 5 hours of opinions. Most of you guys here are pretty level headed and accurate.

Thanks!

[YALE]

Midway was closing out some Adams Arms uppers for like $500, fyi.

[slowyellow]

I don't know much about them, but I think that I remember CJ having an issue with an AA kit with a shorter barrel. I believe that the barrel length made a large difference in performance.

[GAP]

I don't know much about them, but I think that I remember CJ having an issue with an AA kit with a shorter barrel. I believe that the barrel length made a large difference in performance.

That was more due to the redx arms barrel, than the piston kit. The piston couldn't be properly distanced to the carrier. The piston was getting a running start and hammering the carrier.

[ThreeFingerPete]

That was more due to the redx arms barrel, than the piston kit. The piston couldn't be properly distanced to the carrier. The piston was getting a running start and hammering the carrier.

And it is a .300 bulk, which is apparently kryptonite to pistons.

[CJ]

And it is a .300 bulk, which is apparently kryptonite to pistons.

It blew up on my .223 gun. But yes, on .300 it doesn't run right. Red X did cut me a new barrel at my specs, which I haven't shot yet, but should be okay. Adams arms treated me exceptionally well - even though red x was the problem, they sent me a new and upgraded kit for free. Really great company.

[aggie97]

It blew up on my .223 gun. But yes, on .300 it doesn't run right. Red X did cut me a new barrel at my specs, which I haven't shot yet, but should be okay. Adams arms treated me exceptionally well - even though red x was the problem, they sent me a new and upgraded kit for free. Really great company.

I am finding Adam Arms and CMMG in my "expected price range". But I am looking for a particular forward handguard with rails so when I see it, I will know it. Just making sure I don't see what I like and end up buying something that is prone to failure or has issues I don't want to deal with. My expectation is to drop this right onto my current Armalite lower, mount my M223 Nikon scope on it, sight it in and go shooting. I may try to find a complete lower and piece this together myself as a second gun but the goal is to do it far cheaper than the 1400 to 1700 bucks I am seeing for the gun I want at the local gun store. Seems they want your left and right testicle for something you can build for around $1000....

[CJ]

I am finding Adam Arms and CMMG in my "expected price range". But I am looking for a particular forward handguard with rails so when I see it, I will know it. Just making sure I don't see what I like and end up buying something that is prone to failure or has issues I don't want to deal with. My expectation is to drop this right onto my current Armalite lower, mount my M223 Nikon scope on it, sight it in and go shooting. I may try to find a complete lower and piece this together myself as a second gun but the goal is to do it far cheaper than the 1400 to 1700 bucks I am seeing for the gun I want at the local gun store. Seems they want your left and right testicle for something you can build for around $1000....

visit samson-mfg.com and checkout their Evolution EX series. They are cut to accept the railed AA piston blocks. They are exceptionally light, cheap, and look seamless.

[YALE]

It blew up on my .223 gun. But yes, on .300 it doesn't run right. Red X did cut me a new barrel at my specs, which I haven't shot yet, but should be okay. Adams arms treated me exceptionally well - even though red x was the problem, they sent me a new and upgraded kit for free. Really great company.

They really look out for folks using their stuff.