AR9 built using CMMG‘s radial delayed blowback system, Armaspec Carbine Stealth recoil buffer system, standard AR mil spec lower receiver, standard generic 9mm upper receiver, cheap handguard, Magpul grip (better angle for pistol build), mil spec FCG. Also using, CMMG ARC 9mm magazines. Total build cost minus optic and magazines was 680. All parts were bought new and on sale because I’m a cheapass.
Lower receiver 30
Upper receiver and handguard 100
Lower parts kit including FCG 40
CMMG bolt and barrel 280
Magpul grip 30
Buffer tube 10
SBA3 95
Armaspec recoil system 68
Muzzle Brake 27
Total 680
