WTT for piston uppers. 416 clone uppers preferably $1650 for upper $2400 for whole build Upper deets: KAC FF RAS (TITUSVILLE) BCM THERMAL FIT RECEIVER 10.5” FN BARREL A2 FH COLT GAS TUBE NP3 COATED TOOLCRAFT BCG GWOT STYLE EXTENDED CH PRI MK-12 FOLDING FSP GASBLOCK
