Also is there benefits or anything about not having a spring for the piston like the POFs
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Also is there benefits or anything about not having a spring for the piston like the POFs
Moving piston from behind the bolt (di) does nothing for reliability. Keep the di. Keep it lubed and clean it 2x a year.
Get ammo and get good. Don't take my word for it, pove it to yourself by putting thousands of rounds do downrange with the great rifle you have.
Shoot more, tinker less.
So... are you (OP) thinking of keeping the Colt stock and then purchasing an additional rifle (one with external piston + op rod etc)? As you have probably noticed, most folks around here, myself included, lean heavily towards the DI system (for good reason). Regarding AR's, id pretty much narrow my options to Colt, BCM, KAC, or a custom build made up of really quality parts. Now...if you are dead set on going with a external piston + op rod setup, why don't you have a look at the FN SCAR 16? If I were going to deviate from a DI AR, id leave the AR platform all together and start looking at the SCAR and perhaps an M1A.
What about acr?
steer clear of the ACR. The Colt you have right now is, generally speaking, a better rifle than the ACR. Again, Colt, BCM, KAC, OR, if you just cant help yourself and must move the piston to the gas block, an FN SCAR. You clearly are willing to spend money...how about you tell us exactly what you have and maybe you can get the most out of it? How about an aimpoint T1 to go on your 6920? go buy a bunch of lake city xm193 surplus 556 ammo and go shoot. Im not sure what it is you are trying to accomplish...other than spend money.
I owned a CMMG with the gas piston upper several years ago. Nothing really wrong with it. Shot fine, worked fine. But after a while I got tired of dealing with the front end weight of the piston and the fact that I wanted a different rail for it. At the time, I believe there were very few, if any, rails that worked with it. Plus it would HAVE to be carbine length, nothing longer. And, if I remember correctly, most would have to be machined to even fit. So, got to doing some searching on the web about DI and felt it may be the way to go for me. I was a little hesitant about getting rid of it because it was a piston. But, a buddy of mine owned several AR's that were DI that he had several, several thousands of rounds through them and they were years and years old. They all worked like a charm. And 3 of them were Colts! So I sold it and eventually made my way to a 6920! Wouldn't get rid of it! Now I've shot a SCAR 16 and a Sig556 and I'd pick the SCAR if I was looking for a piston gun between those two. The SCAR just felt right at home, and everything felt familiar.
You picked a GREAT rifle. Take a few classes. When you have done so, you will start to do little mods, grips, slings optics, lights, etc. I promise, piston will be way down on your list, if there at all.
Many of the people here are very knowledgeable and will call a spade a spade. They will react quickly to anyone who tries to strap turds to their rifles. For good reason. Pay close attention to what the names in red say, and Iraqgunz. He knows more about the AR platform than most of us put together.
I like PWS piston guns a lot. I generally agree with what I quoted from Vandal. There is a lot to be said for having an AR (piston or DI) which runs well. I'd think twice before messing with your 6920.
I can't comment on POF. But, PWS's don't really have any significant carrier tilt. That's generally a function of their long operating rod, and their buffer tube which has a lower lip. Their buffer tubes are fully compatible with DI guns. That being said, there are plenty of people shooting PWS piston uppers on someone else's lower with a non-PWS buffer tube, with no problems.
45dylank0723, if you are considering a conversion because you want to tinker with something, that's one thing. But if you want a quality reliable piston gun, you should probably just get a PWS or HK piston upper.
Joe Mamma
Your money would be better spent getting some training and shooting the rifle more. You can also search the piston vs. DI discussions here ad nauseum and read multiple threads and pages.