Piston Build Pics [UPDATED TILT ISSUE]

Latest Build; PWS Piston (thanks to Lee & Jake at AR Bunker for all your help) , Anvil Arms fluted CM\CL 16” barrel, Duracoated C3 billet lower & BCM Upper (thanks to Oakridge Custom Finishing, nice job) and a DD Omega, sorry some of the pics are pretty blurry, half the ones I took didn’t come out. I guess I need a camera more than another rifle.

I’m in the process of swapping the MBUS sights for Troy, forgot about the heat issue with MBUS.

I went to the range this Saturday and Sunday to try and see if I was indeed getting buffer tilt and tube wear problems, like most piston users.

Well after about 3 full 30 rd mags I started getting this weird problem I’ve never heard of. The buffer was sticking in the very back of the buffer tube, and sure enough the tube had scuffed up on the bottom. No bad gouges or flaking of metal just a long; about an inch, scuff mark. This was causing the bolt to hang in the back of the upper. The bolt did move freely; if I tilted the rifle muzzle end down the bolt would slide forward. I thought I had used enough oil in the tube, VERY light coat of rem oil. But I guess it needed more. So I ran a heavily oiled (CLP this time) upper Mop down an back a few times in the tube, coated the spring and buffer, and she ran just fine for the other two mags. You can still see where the carrier was rubbing against the bottom of the tube but no scuff mark; obviously because of the layer of oil. I’ll post some picks when I get a better camera.






Are you having a problem with the Magpul buis or are you just worried about the heat because there made of polymer?

Magpul “recommends” that you don’t mount their front sight on a Rail top gas block because of possible heat related issues; I assume due to the spring becoming weak, clamp fingers becoming brittle, etc, etc, Due to heat cycles.

I read this on another board that a Magpul rep posted to.

Thanks for the info, I was just about to purchase a set and mount them on a vulcan arms gas block I just installed on my new upper. Looks like a troy or yhm is the way to go.

np, glad i could help

Dude, that’s what I’m talkin’ about.

I’ve been wanting to see a killer “Georgia Gun”, and that’s her.

Nice smokewagon, amigo.

The C3D lowers are famn dancy. Jake and Lee are totally cool dudes. They were able to hook me up with a UBR when all hope had been lost. If the drive wasn’t nightmarish (OTP - Topside. Way, WAY topside), I’d be going down there a lot more often.

thanks for the ups; if you like this one then check out the pics of my “Other” white AR.
stainless the other white meat