DS Arms AR15 ZM4 5.56 18″ MK12 Mod 1 Foundation Rifle

DS Arms AR15 ZM4 Service Series 5.56×45 – 18″ MK12 Mod 1 Foundation RifleFeatures a Ballistic Advantage 18″ 5.56 SPR Rifle Length AR15 Barrel w/ Ops 12 Cut, Performance Series Barrel and True Knight’s Armament MK12 Handguard.Upper Receiver 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
• OPS Collar & Muzzle Brake Installed
• Ballistic Advantage 18″ 5.56 SPR Rifle Length AR 15 Barrel w/ Ops 12, Performance Series Barrel
• MK12 .750″ Gas Block – Set Screw & Pinned in Place
• 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 1/2×28
• Knight’s Armament Free Float Rifle Length RAS System Handguard – 1913 Spec Picatinny Rails – Includes 3 Ribbed Panels – KAC 21318
• Mil-Spec. M16 Cut Bolt Carrier Group
• Mil-Spec. Standard Latch Charging Handle

Lower Receiver Specifications:

• Machined from 7075-T6 Alloy Forging
• Mil-Spec Dimension
• Hardcoat Anodized Mil-A-8625F Type III Class 2 Finish
• Caliber Marked 5.56
• Selector Marked: Safe – Fire – Auto
• A2 Pistol Grip
• Mil-Spec 6 Position Buffer Tube
• H1 Carbine Weight Recoil Buffer
• Mil-Spec B5 Systems SOPMOD Stock Assembly
• Complete Mil-Spec Semi Auto Internals
• Flared Magazine Well
• Proper Pivot Pin Drain Hole

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