DSA ZM4 AR15 Slim Series 5.56 Upper Receiver Assembly - 18" Stainless Steel Rifle Length Barrel

DSA ZM4 AR15 Slim Series 5.56 Upper Receiver Assembly - 18" Stainless Steel Rifle Length Barrel

This DS Arms Slim Series upper receiver assembly is built featuring a billet upper receiver & handguard. This combination makes for a very slick & streamlined look perfect for your next build!

Specifications:

• 18" Medium Weight Profile Barrel
• 5.56x45 mm Chamber & Bore
• 416 R Stainless Steel
• Barrel Has Phosphate Finish for "Frosty" Look
• 1:7 Twist Rate
• Barrel Threaded 1/2x28 Right
• M4 Barrel Extension
• Rifle Length Gas System
• Stainless Steel Gas Tube
• 4140 Chrome Moly Steel Set Screw Low Profile Gas Block
• 6061 Billet Aluminum Upper Receiver
• Upper Receiver & Handguard Are Hardcoat Anodized per MIL-A-8625F, Type III, Class 2 Finish
• M4 Feed Ramps
• Mil-Spec. Ejection Port Door
• A2 Birdcage Flash Hider
• 15" Free Float M-LOK Handguard

Barreled Upper Assembled As Shown, Does Not Include Bolt Carrier Group or Charging Handle