PWS MK107 7.75" Diablo Upper .223 Wylde

New in box Primary Weapons System MK107 7.75” gas piston upper chambered in .223 Wylde, part # M107UA0B. Upper ships complete as you see it.

• Long- Stroke Gas Piston
• 7.75 1:8 Twist Button Rifled Chromoly Barrel with Isonite QPQ treatment
• 4 Position Adjustable Gas Piston
• .223 Wylde Chamber to Accept 5.56 and .223 Remington Without Sacrificing Accuracy
• Machined Tool Steel Bolt Carrier Group with Nickle-Teflon coating
• 7” Freefloat Keymod Rail
• 7075 Mil-Spec Aluminum Forged Receiver
• Type III Mil-Spec Hardcoat Anodized Receiver