6MM ARC COMPLETE UPPER 20"

$688.00

6mm ARC COMPLETE UPPER 20"

20" Liberty barrel 1-7.5   5R  Twist 416R

Bolt Material 9310

Rifle Length Gas System

5/8x 24 Threaded Muzzle UNF

Heliport Muzzle Brake

 Handguard 15" 

M3 Upper Receiver