Maxim Defense MDX 510 AR-15 Upper Receiver Assembly 300 AAC Blackout 10.3" Barrel Black

Maxim Defense Industries MDX 510 U.R.G. AR-15 .300 AAC Blackout 10.3 inch Upper Receiver Pistol Length 1-8 Twist 5/8x24 HATEBRAKE Black. It comes with either our Mil-Spec bolt carrier group or SCW bolt carrier group for those using our SCW system. For those wanting a standard length short barrel the 10.3 barrel of the MDX510 is your best choice. Like our other uppers the MDX510 includes our HATEBRAKE for increased reliability Radian Raptor charging handle and Maxim Defense hand stop Specifications for Maxim Defense Industries MDX 510 U.R.G. AR-15 10.3 inch Upper Receiver: Manufacturer: Maxim Defense Industries Overall Length: 19.25 in Barrel Length: 10.3 in Gas System Length: Pistol Length Muzzle Device: Hatebrake Finish: Cerakote Handguard Style: M-LOK w/ Top Picatinny Rail System Gun Model: AR-15 Barrel Material: 4150 Chrome Moly Vanadium Package Contents: Maxim Defense Industries MDX 510 U.R.G. AR-15 10.3 inch Upper Receiver Maxim Defense Industries MXM-47989: MDX 510 U.R.G. AR-15 .300 AAC Blackout 10.3 inch Upper Receiver Pistol Length 1-8 Twist 5/8x24 HATEBRAKE Black