Luth-AR Mark 12 Kit Minus Lower Receiver w/ Collapsible Stock 5.56mm 27in 18in Government Rifle 1x9 1/2x28 Picatinny Key MOD A2 Flash Hider Anodized

Luth-AR Mark 12 Kit Minus Lower Receiver w/ Collapsible Stock 5.56mm 27in 18in Government Rifle 1x9 1/2x28 Picatinny Key MOD A2 Flash Hider Anodized. 56 Complete Mark 12 Barrel Kit features an 18 inch Mark 12 5.56mm barrel and a 15in KeyMod short mid-length rail so you can build a customized upper to add onto your stripped lower receiver. These AR15 Upper Receivers by Luth-AR are built tough with 4140 Chrome Moly steel with a 1-9 twist rate to ensure the accuracy you need from your rifle. This Luth-AR 5.56 Complete Mark 12 Barrel Rifle Upper Receiver Kit is also designed with 6 lands and groves so you can use a variety of accessories and optics with this barrel. Button broaching adds extra strength and prevents the parts from corroding over time. You can also mount a suppressor or any other device you desire with this kit. The Luth-AR 5.56 Complete Mark 12 Barrel Mid-Length RH Barrel Kit features an attachment rail on the handguard so you can easily install an A2 flash suppressor or other device that requires a mountable rail. Specifications for Luth-AR 5.56 Complete Mark 12 Barrel Kit: Manufacturer: Luth-AR Cartridge: .223 Remington 5.56x45mm NATO Overall Length: 27 in Barrel Length: 18 in Barrel Profile: Government Gas System Length: Rifle Length Number of Sling Points: 2 Barrel Twist Rate: 1-9 Threads per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Finish: Manganese Phosphate Color: Black Gun Model: AR-15 Fabric/Material: 4140 Chrome Moly Gas Block Journal Size-Diameter: .750 in Handguard Length: 15 in Handguard Style: Round Rail Gun Rail: KeyMod Gun Type: Rifle Gun Make: AR Platform Additional Features: Will need GT-CUP Bolt Carrier Group Included: MIL-SPEC Charging Handle Included: MIL-SPEC Weight: 12 lb 11 lb Magazine Included: No Features of Luth-AR 5.56 Complete Mark 12 Barrel Kit 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 Grooves M4 Feed Ramp Button Broached Package Contents: Luth-AR 5.56 Complete Mark 12 Barrel Kit Fully assembled Mark 12 5.56mm Upper with 15in Keymod Palm Handguard Buttstock Assembly (Black)- Fixed Buttstock OR Collapsible Buttstock MBA-1 Fixed Rifle Buttstock Assembly MBA-3 Adjustable Carbine Buttstock Assembly Complete Lower Parts Kit (LRPK-1 Complete .223/5.56 Lower Receiver Parts Kit) Includes: BAA3-M12 - 18 Mark12 5.56 mm Barrel BC-A-223 - Fully Assembled Bolt Carrier BL-04 - Standard Gas Tube BL-06-A2 - A2 Flash Hider FTT-EA1 - A3 Upper Receiver Assembled GB-LP750 - Gas Block .750 HG-V-15K - Palm Handguard - Vented 15 KeyMod/MLOK/Smooth with Barrel NutFeatures of Luth-AR AR-15 Complete MARK 12 Barrel Kit Luth-AR RKM12-18-3: Mark 12 Kit Minus Lower Receiver w/ Collapsible Stock 5.56mm 27in 18in Government Rifle 1x9 1/2x28 Picatinny M-LOK A2 Flash Hider Anodized Manganese Phosphate Black