Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR 10.5in Barrel .578-28 10.5in HG FH Black

Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR 10.5in Barrel .578-28 10.5in HG FH Black. Leader in top of the line dedicated AR15 Pistol Caliber parts. This product is not compatible with DI gas systems or rifle-caliber bolts. Specifications for Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR: Manufacturer: Quarter Circle 10 Caliber: .45 ACP Barrel Length: 10.5 in Barrel Profile: Medium Barrel Twist Rate: 1-16 Threads per Inch: .578x28 Muzzle Device: A2 Flash Hider Color: Black Gun Model: QC10 Rider QC5 QC10 Blu' Whistler QC10 Ranger Condition: New Handguard Length: 10.5 in Gun Rail: M-LOK Gun Make: AR Platform Bolt Carrier Group Included: MIL-SPEC Charging Handle Included: MIL-SPEC Weight: 4.5 lb Magazine Included: No Last Chance: Yes Features of Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR: Designed specifically for pistol-caliber AR builds QC10 Billet Rear Charging Upper Receiver .45ACP QPQ Nitride-Treated Barrel Compatible with QC10 Big Tex (GLF) Lower Receiver QC10 .45ACP Bolt MLOK Handguard QC10 Pistol Caliber Flash Hider Test-fired at the factory Made For the AR Platform- Not Modified Package Contents: Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR Quarter Circle 10 QC-CU-G45-10.5: 45 ACP Complete Upper Receiver w/ PMUR 10.5in Barrel .578-28 10.5in HG FH Black