Product Description
MCS AR-9 5-INCH 9MM PISTOL BUILD KIT 1:10 FREEFLOAT M-LOK HANDGUARD W/FIN BRACE
The MCS 9mm AR-9 Full Build Kit built around a compact 5-inch direct blowback platform. The kit centers on a 5-inch slim profile parkerized steel barrel with a 1:10 twist rate and 1/2x36 thread pitch, paired with a black A2 birdcage flash hider and a black 1/2-inch crush washer. The 7075-T6 aluminum hardcoat anodized upper receiver features M4 feed ramps, a forward assist, and an ejection port door assembly, paired with a 4-inch slim-line freefloat M-LOK handguard featuring a full-length Picatinny top rail. A complete 9mm nitride bolt carrier group in 8620 alloy steel with an external extractor compatible with Glock and Colt pattern magazines, and a Mil-Spec AR-15 M4 charging handle complete the upper side. The lower hardware includes a complete Mil-Spec AR-15 lower parts kit with a Mil-Spec AR-15 A2 style grip, a heavy-duty AR-15 pistol buffer tube, an AR-15 9mm carbine buffer, a USA-made standard AR-15 carbine recoil spring, a Mil-Spec AR-15 M16 receiver end plate, and a Mil-Spec AR-15 carbine castle nut. The polymer stabilizing brace in black is included.
Caliber: 9mm Luger (9x19)
Barrel Length: 5"
Barrel Material: Parkerized Steel
Barrel Profile: Slim Profile
Twist Rate: 1:10
Operating System: Direct Blowback
Thread Pitch: 1/2x36
Muzzle Device: A2 Birdcage Flash Hider
Crush Washer: Black 1/2" Crush Washer Included
Upper Receiver: AR-15 Upper Receiver
Receiver Material: 7075-T6 Aluminum
Receiver Finish: Hardcoat Anodized
Feed Ramps: M4 Feed Ramps
Handguard Length: 4"
Handguard Type: Slim-Line Free Float M-LOK Handguard
Top Rail: Full-Length Picatinny Rail
Ejection Port Door: AR-15 .223/5.56 Ejection Port Door Assembly
Forward Assist: Included
Bolt Carrier Group: 9mm Nitride Bolt Carrier Group
BCG Material: 8620 Alloy Steel
Magazine Compatibility: Compatible with Glock and Colt Pattern Magazines
Extractor Type: External Extractor
Charging Handle: Mil-Spec AR-15 M4 Charging Handle
Lower Parts Kit: Complete Mil-Spec AR-15 Lower Parts Kit
Buffer Tube: Heavy Duty AR-15 Pistol Buffer Tube
Buffer: AR-15 9mm Carbine Buffer
Buffer Spring: Standard AR-15 Carbine Recoil Spring, Made in USA
End Plate: Mil-Spec AR-15 M16 Receiver End Plate
Castle Nut: Mil-Spec AR-15 Carbine Castle Nut
Brace: MCS Polymer Stabilizing Brace, Black
Pistol Grip: Mil-Spec AR-15 A2 Style Grip
