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