DSA ZM4 AR15 Service Series MK12 MOD 1 Upper Receiver Assembly - 18" 5.56x45mm Barrel

DSA ZM4 AR15 Service Series MK12 MOD 1 Upper Receiver Assembly - 18" 5.56x45mm Barrel

Features a Ballistic Advantage 18" 5.56 SPR Rifle Length AR 15 Barrel w/ Ops 12, Performance Series Barrel.

Specifications:

• Forged 7075-T6 A3 M4 Upper Receiver
• Hardcoat Anodized per MIL-A-8625F, Type III, Class 2 Finish
• 1913 Mil-Spec Picatinny Top Rail
• M4 Feed Ramps on Upper Receiver
• Mil-Spec Port Door & Forward Assist Assembly
• Allen Engineering OPS Collar & Muzzle Brake Installed
• Ballistic Advantage 18" 5.56 SPR Rifle Length AR 15 Barrel w/ Ops 12, Performance Series Barrel
• .750" Gas Block Diameter
• 4150 - CMV Barrel Steel
• QPQ Corrosion Resistant Finish
• 5.56 NATO Chamber & Bore
• 1:7 Twist Rate
• M4 Feed Ramp Barrel Extension
• HP and MPI Inspected
• Rifle Length Gas System
• Stainless Steel Gas Tube
• Barrel Threaded 1/2x28
• Kinght's Armament Free Float Rifle Length RAS System Handguard - 1913 Spec Picatinny Rails - Includes 3 Ribbed Panels - KAC # 21318

Upper half assembled as shown, no bolt, no carrier or charging handle included.

All Parts U.S. Made and Assembled by DS Arms!