Complete 18″ Mark 12 AR Carbine Kit

Build a Complete 18″ MARK 12 5.56 mm Barrel, AR Carbine Kit

This kit contains everything you need to build your own AR except the stripped lower receiver.

The Kit Contains:

• Fully assembled 18″ MARK 12 5.56 mmUpper with 15″ Keymod Palm Handguard®
• MBA-3 Adjustable Carbine Buttstock Assembly
• Complete Lower Parts Kit

Add to your build with optional add-on parts such as a Velocity Drop-in trigger, or The Lower Enhanc-AR® Kit.

This Kit does not come with the lower receiver. You will have to supply a lower receiver purchased elsewhere. We recommend that you look for a Mil-Spec stripped lower.

Includes:

• MBA-3 Adjustable Carbine Buttstock Assembly
• LRPK-1 Complete .223/5.56 Lower Receiver Parts Kit

18″ Mark 12 5.56 mm Complete Upper Barrel Assembly

Includes:

• HG-V-15K – Palm Handguard® – Vented 15″ KeyMod with Barrel Nut
• BAA3-M12 – 18″ Mark12 5.56 mm Barrel
• FTT-EA1 – A3 Upper Receiver Assembled
• BC-A-223 – Fully Assembled Bolt Carrier
• BL-04 – Standard Gas Tube
• GB-LP750 – Gas Block .750
• BL-06-A2 — A2 Flash Hider

Upper Specs:

• 7075-T6 Forging
• Hardcoat anodize Black

Bolt Specs:

• Bolt: Carpenter 158 steel
• Extractor: 4140 Alloy steel
• Army Spec Heat Treatment
• Manganese Phosphate

Bolt Carrier Specs:

• Carrier: 8620 steel
• Cam pin: 4340 Alloy steel
• Carrier key: 4130 Alloy steel
• Army Spec Heat Treatment
• Manganese Phosphate

Barrel Specs:

• 18″ Mark 12 5.56 mm Barrel
• 5.56 mm
• 4140 Chrome Moly
• Threaded Barrel — Thread Pitch 1/2 x 28
• 1-9 RH Barrel Twist
• 6 Lands and Groves
• M4 Feed Ramp
• Button Broached

SKU: RKM12-18-3