Product Description
MCS AR-9 5" INCH PISTOL BUILD KIT 9MM FREEFLOAT M-LOK HANDGUARD IX W/SBA5 BRACE
The MCS IX Full Build Kit delivers a complete, ready-to-assemble 9MM AR-9 pistol platform with the premium SB Tactical SBA5 adjustable brace. Featuring a MCS 5-inch BC-9 slim profile barrel made from 4150 CrMoV steel with phosphate finish and 1:10 twist rate, 6061-T6 billet aluminum pistol-caliber upper receiver, 7-inch M-LOK freefloat handguard with hardcoat anodized finish, 9MM nitride BCG, and the latest-generation SBA5 brace with nylon reinforced polymer construction—perfect for AR-9 pistol builds, PCC competition, home defense, and shooters seeking a complete 9MM platform with enhanced stability, adjustability, and premium components.
Caliber: 9mm (9x19)
Barrel: MCS BC-9 5" PCC Barrel
Barrel Length: 5-inch
Barrel Material: 4150 CrMoV
Barrel Twist Rate: 1:10
Barrel Finish: Phosphate
Barrel Thread Pitch: 1/2x36
Barrel Profile: Slim Profile
Barrel Gas System: Direct Blowback
Handguard Material: Aluminum
Handguard Style: M-LOK
Handguard Finish: Hardcoat Anodized – Black
Handguard Length: 7-inch
Upper Receiver: AR-15 Billet Upper Receiver for Pistol Calibers
Upper Receiver Material: 6061-T6 Billet Aluminum
Upper Receiver Finish: Type III Hardcoat Anodized
Bolt Carrier: 9MM Nitride Bolt Carrier Group
Bolt Carrier Material: 8620 Alloy Steel
Bolt Carrier Finish: Nitride
Muzzle Device: 9mm Flash Can
Muzzle Thread Pitch: 1/2x36
Pistol Brace: SB Tactical SBA5 Pistol Stabilizing Brace
Pistol Brace Material: Nylon Reinforced Polymer
Pistol Brace Color: Black
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
