Maxim Defense PDX U.R.G. Complete Upper Receiver 5.56 NATO 5.5" Barrel Black

The Maxim Defense PDX U.R.G. is a complete AR-15 upper receiver group chambered in 5.56x45mm NATO. It is built for use on any mil-spec AR-15 lower receiver and is intended for close-quarters use, where its compact overall length and 5.5" barrel are the main design goals.

The barrel is 5.5" long with a 1/2-28 thread pitch and the overall length is 14". The receiver is made from 7075 and 6061 aluminum, with 17-4 stainless steel components, and the finish is black. The action is semi-automatic and the upper includes an HK-style height rail and an M-Lok compatible handguard.

The group ships complete with a Maxim Defense bolt carrier group, a Radian Raptor charging handle, and a Maxim Defense hand stop. A HATEBRAKE is included and is mounted under the M-Lok handguard.

• Caliber: 5.56x45mm NATO
• Barrel Length: 5.5"
• Overall Length: 14"
• Thread Pitch: 1/2-28
• Platform: AR-15
• Action: Semi-Auto
• Material: 17-4 Stainless Steel, 7075 and 6061 Aluminum
• Color: Black