RetroFit Piston System

[Dank27]

So I am thinking about building an upper with a piston system. Question is...

Adams Arms or Synac Ordenance?

Pros vs Cons and opinions welcome

Dan

[Jarheadsergeant]

Why? The only system that really works 100% of the time is hk. You can't run a can in ny so it doesn't make sense.

[E]

While its not a retrofit, LWRC runs like a champ and eats everything it gets fed.

[Happy Camper]

Why? The only system that really works 100% of the time is hk. You can't run a can in ny so it doesn't make sense.

That's my question as well. Unless you're shooting full auto suppressed from a short barrel there's no advantage.

Also, Eugene Stoner already put a piston in the AR action. It's just not at the gas port.

[vmtcmt]

A few years ago, I bought a used ATI AR that had an ATI branded Adams Arms retrofit kit installed. The original owner had all sorts of problems with it, and wanted out. I bought it as my first AR. Took me a while to figure it out, but I eventually got it running correctly. I ran over 3K of nothing but various brands of Russian steel case .223 through it, and the ONLY malfunction it ever had was a hung up mag follower during a MDTS Carbine class at LIPSA. The only reason I cleaned it ws to get the sand out of the rifle. Other than that, I could have kept going like I was with an occasional patch down the bore, and a drop of oil here and there.

I've heard of accuracy issues due to the inertia of moving parts over the bore, but I was second during the accuracy portion of said carbine class, while still using Russian steel case. BCG stayed cool and lubed, as the oil did not cook off. The front of the handguard got dirty because that was where the gasses exited, but it is of no consequence to me. I actually laughed during the class watching guys gently place their ARs down on their mats. I tossed mine flat on the sand, did a quick brush off, and away I went.

I've since converted the AR to DI because it was such a cheap piece of crap, and I'm putting the AA kit on a more deserving upper.

Many don't like piston ARs, but I'm a fan. You have to decide if it's worth the expense. You can buy a complete PSA DI upper for the price of the AA kit, and you have to be a bit handy, and follow the directions. Whatever muzzle device you have will have to be removed to get the AA gas block on. If you want a FF handguard, not many will fit, but AA has a list on their website. Whatever front sight you use has to be metal if mounted on the gas block. A plastic Magpul will melt.

If you do decide to go the AA route, and need a hand setting it up, don't hesitate to ask.

[Dank27]

Im looking at the advantages of running cleaner and being able to account fir different bullet weights.

[Happy Camper]

It won't be cleaner. Instead of cleaning the bolt tail you're going to be cleaning carbon off of the piston face. And you're going to have the downside of more weight, added complexity, proprietary parts and possibly carrier tilt issues.

[Dank27]

Syrnac System weighs about 4.5oz more than a typical DI set up and Bruce over at hunters runs his and it keeps the upper receiver almost spotless.

[vmtcmt]

Mine ran much cleaner.

[vmtcmt]

Almost forgot about these guys:

http://www.huldraarms.com/

[E]

NiB bolt helps to keep things clean.

[vmtcmt]

This was after approximately 1500 rounds of Russian steel case ammo, which ain't exactly known for it's cleanliness:
piston.jpg

Nothing there was baked on and hardened. It just wiped clean with minimal effort,.

[Dank27]

Jeez guess you guys are against the idea lol

[E]

Get the piston

[Dank27]

Get the piston

Oh im gonna. Just not sure which system. I like the availability of BCG styles with the adams but i also like the less moving parts and cost of the syrnac. Hmmm lol