Adams Arms Piston Upper/Conversion

Ok guys.

If you haven’t seen my posts on this from the past, I’ll say it one more time. Close to three years, works great, but I see no improvement. It’s just different. It’s not the holy grail. It’s not the Antichrist. It’s just a rifle. YMMV.

Try it if you want. Mine has thousands through it. Ran ALMOST as good as my DI. To me it’s a mod, no more, no less. I was pleased.
Markm is not.

Thats why. They make chocolate and vanilla.

Will I buy another? No. Mine works fine. If you are a serious shooter, I would point you to the DI. More track record. Speaks for it self. But come on, try piston or not. You will find your own end result.

ETA: I would really like to see an actual AA arms hard core test. With 10,000 rounds, just to see how it fares against hard core use.

Just curious, what about it ran worse than your DI?

I’m not an expert, but here are the opinions one my single sample.
Or you can read some of the posts from other guys. My experience was close but better than most.

SLIGHT recoil increase(might be perceived).

Never saw the value of the supposed “easy clean”. My DI is easy clean.

SLIGHT decrease in accuracy. About 1/8 to 3/8 inch. I don’t understand this.

Heavier than DI.

Heat is taken away from BCG, but it’s hotter than hell at the gas block. Don’t know how much better that is. I would take a guess that could create other problems, like burning the shit out of myself (again, I can’t blame the rifle for me being a dumbass).

Now as far as running, I have thousands of rounds of rounds with few malfunctions. A couple a few bolt over and double feed(these I think were the magazines used and not the rifle). Had the same with DI.

All taken together, these were the the only negative things I can say.

330rds is roughly what I was firing a day for a five day course.

So I would have to clean the Wolf crud out of my DI rifle every night to avoid problems on the line the following day.

The 330rds in my piston gun was only a comparison of the crud build up for one day of shooting when comparing the two systems. The piston set-up was 90% cleaner for the same round count.


Junior,

I bow to your uber knowledge oh zen and since I am not worthy of your attention please refrain from commenting on any of my future posts.:rolleyes:

I haven’t noticed much of a difference in function between my DI guns and my Adams Arms equipped rifle. I ran the rifle through a few high round count classes and several local matches, and it has functioned flawlessly. But then again, I have done the same with my other DI guns. At the end of the day, I don’t feel like it was a necessary addition. If I had it to do over again, I would not have opted for the piston.

YMMV, but the following are some of the caveats I experienced with the system:

  • Added weight to the rifle

  • Heat is transferred from the bolt carrier group to the gas block. In my case, I have a carbine length system with a Daniel Defense 9.5 FSP rail installed and the heat does not make it conducive for a high support hand grip.

  • The gas vents up front near the handguards and carbon still develops albeit in a different area.

IMHO, I feel it is also a major disadvantage to not have the availability and commonality of parts on the off chance that a component is bad or wears out.

just to expand a little… any rifle that has an issue after only 300 rounds is a problem…