I have been lurking for some time and have decided from what I have read in the forums that i can probably build an AR myself without sacrificing quality.

I plan on a RRA or Bushy stripped lower build up but havent decided on the upper.

My question is are the parts kits all generic and uniform to the lowers i seem to have read about different sized springs and pins i believe mil spec was a size that was used.

Any help would be apprecited.

This would be my first AR

any LPK, CMT/Stag, RRA, Bushy that u buy will fit in the lowers that u mentioned.

I believe the Bushy parts kits have a plastic trigger guard.

They do. Just got a kit last week. Everything went in no problem but I'm holding off putting in the trigger guard until I get an aluminum one. The plastic one would work fine, I just prefer metal.

Quoted: They do. Just got a kit last week. Everything went in no problem but I'm holding off putting in the trigger guard until I get an aluminum one. The plastic one would work fine, I just prefer metal.

I would agree