firechief

I dreamt a solution, although it's got a draw back. Two piece take down pin with a .277 shoulder and threaded. Kinda like a fancy ambidextrous selector. Gona suck to crack it open because i'll need either a tool socket hole on the end or design in a thumb flipper lie a selector to unscrew it, but saves reaming the upper. I'm gona have to give this more thought and maybe it will come to me. Arg h, brain teaser, gona drive me nuts I can't figure a way to get a bushing to stay reliably in the upper unless it's press fit on each side and then go to a .250 pin for the whole system, but pressing bushings that thin into place is gona definitely need a drive tool or it will probably collapse. Gona need some test bench time, guess thats what makes me the special head banging type. I bet I just ream the upper and call it sacrificed to DPMS, I doubt I'll ever sell it anyway. Why lord didn't they just make a standard mil spec 7.62 AR for your children to enjoy !!

:P Yep, I did read the pin sizes ass backwards. Milling a slot in a pin, not a big deal, slow feed, lots of coolant. If the POF upper has plenty of lug area material then a few thou with an adjustable blade ream to fit should be straight forward. I already hand ream my FCG pins on builds and probably have the correct ream in my set. AS for the POF choice it's because of reading only good things about them. I could easily just go to a DPMS upper and make the first build real easy and unchallenging. Now if POF offered an 80% lower that would be nice but they don't so I accept the challenge. Buffer's, that's going to be a learning curve for me, I'm guessing every BCG needs to be tuned since there all going to be different weights, gas, piston, plenty variables. If it was easy it wouldn't be any fun. I bet I end up with a butt load of extra parts for .308 just like my 5.56's, so many toys not enough storage.

Thanks, that helps a lot, so I can plan on machining down some larger pins or use the lathe to make up my own. Bushings that thin would be a bstrd to make but turning my own pins would probably be easier. <thumbsup>

JD Machine also has 80% lowers, their nice but pricy @ $300 compared to Tactical and others. They do look different as far as the left side, no shelf or extras like the recessed and curved areas around the selector. The JD is slick side with no selector bosses, just a slight raise in the take down pin boss. Uses the sr 25 style mags or modified 14's.

I'M STARTING TO GATHER THE LAST FEW PARTS AND WANT TO BE SURE THE POF UPPER IS COMPATIBLE WITH THE DPMS PATTERN 80% LOWER I ORDERED. oops sorry for the caps. I read the few POF threads and see there's a problem with the carrier not kissing the face of the buffer sometimes. That should be an easy fix if true.