Quarter Circle 10 Side Charging Complete 45 ACP Upper Receiver Assembly 16in Barrel Black QC-CU-PSCU-G-45-16

Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly 16in Barrel Black QC-CU-PSCU-G-9-16 Inch

Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly 16in Barrel Black QC-CU-PSCU-G-9-16 Inch. 355 Caliber Features of Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly: QC10 Side Charging Upper Receiver Compatible... ... more

Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR 16in Barrel .578-28 15in HG FH Black QC-CU-G45-16

Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR 16in Barrel .578-28 15in HG FH Black QC-CU-G45-16. Leader in top of the line dedicated AR15 Pistol Caliber parts. This product is not compatible with DI gas systems or rifle-caliber bolts.... ... more

Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly 7.5in Barrel Black QC-CU-PSCU-G-9-7.5 Inch

Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly 7.5in Barrel Black QC-CU-PSCU-G-9-7.5 Inch. 355 Caliber Features of Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly: QC10 Side Charging Upper Receiver Compatible... ... more

Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly 5.5in Barrel Black QC-CU-PSCU-G-9-5.5 Inch

Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly 5.5in Barrel Black QC-CU-PSCU-G-9-5.5 Inch. 355 Caliber Features of Quarter Circle 10 Side Charging Complete 9mm Upper Receiver Assembly: QC10 Side Charging Upper Receiver Compatible... ... more

Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR 5.5in Barrel .578-28 5.5in HG FH Black QC-CU-G45-5.5

Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR 5.5in Barrel .578-28 5.5in HG FH Black QC-CU-G45-5.5. Leader in top of the line dedicated AR15 Pistol Caliber parts. This product is not compatible with DI gas systems or rifle-caliber bolts.... ... more

Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR 7.5in Barel .578-28 7.5in HG FH Black QC-CU-G45-7.5

Quarter Circle 10 45 ACP Complete Upper Receiver w/ PMUR 7.5in Barel .578-28 7.5in HG FH Black QC-CU-G45-7.5. Leader in top of the line dedicated AR15 Pistol Caliber parts. This product is not compatible with DI gas systems or rifle-caliber bolts.... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-12 HG No BCG/Charging Handle Gen 2 FDE Cerakote 16in APAR600232M14

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-12 HG No BCG/Charging Handle Gen 2 FDE Cerakote 16in APAR600232M14. 300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish these AR15... ... more

Quarter Circle 10 Complete 9mm Upper w/ PMUR 10.5in Barrel 1/2 - 28 10.5in HG FH Black QC-CU-G9-10.5

Quarter Circle 10 Complete 9mm Upper w/ PMUR 10.5in Barrel 1/2 - 28 10.5in HG FH Black QC-CU-G9-10.5. 355 Caliber Features of Quarter Circle 10 Complete 9mm Upper w/ PMUR: QC10 Billet Rear Charging Upper Receiver 9x19mm QPQ Nitride-Treated Barrel... ... more

Aero Precision M5E1 Complete Upper Reciever .308 16in Mid Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Anodized Black APAR308554M22

Aero Precision M5E1 Complete Upper Reciever .308 16in Mid Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Anodized Black APAR308554M22. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim... ... more

Aero Precision M5E1 Complete Upper Reciever .308 16in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard CMV Anodized Black APAR308233M27

Aero Precision M5E1 Complete Upper Reciever .308 16in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard CMV Anodized Black APAR308233M27. 308 Barrel Complete Upper Receiver. While there's several options to choose from all of these AR15 Upper... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-15 HG No BCG/Charging Handle Gen 2 FDE Cerakote 16in APAR600252M14

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-15 HG No BCG/Charging Handle Gen 2 FDE Cerakote 16in APAR600252M14. 300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish these AR15... ... more

Aero Precision M4E1 Complete Upper Receiver .223 Wylde Mid Barrel EM-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251M9

Aero Precision M4E1 Complete Upper Receiver .223 Wylde Mid Barrel EM-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251M9. 223 Wylde Mid Barrel will upgrade the look of your upper to a more modern one. These AR15 Upper Receivers... ... more

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EQ-12 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600231Q9

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EQ-12 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600231Q9. These AR15 Upper Receivers from the trendsetters at Aero Precision comes fully assembled so that you can lock in... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-12 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600231M14

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-12 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600231M14. 300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish these... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EQ-12 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600231Q14

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EQ-12 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600231Q14. 300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish these... ... more

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EM-12 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600231M9

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EM-12 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600231M9. These AR15 Upper Receivers from the trendsetters at Aero Precision comes fully assembled so that you can lock in... ... more

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EQ-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251Q9

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EQ-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251Q9. These AR15 Upper Receivers from the trendsetters at Aero Precision comes fully assembled so that you can lock in... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251M14

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251M14. 300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish these... ... more

Radical Firearms Complete Upper Assembly AR-15 .300 Blackout 10.5in Barrel 10in HG M-LOK RPR 5/8x24 A2 FH Black CFU10.5-300HBAR-10RPR

Radical Firearms Complete Upper Assembly AR-15 .300 Blackout 10.5in Barrel 10in HG M-LOK RPR 5/8x24 A2 FH Black CFU10.5-300HBAR-10RPR. 5in HBAR profile 300BLK is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the... ... more

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 5 inch Barrel Mil-Spec Rear Charge Black MIKE45U-R54-B-MMKIT

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 5 inch Barrel Mil-Spec Rear Charge Black MIKE45U-R54-B-MMKIT. 45 ACP Complete Upper Receiver Kit was made to be the ideal item for any person looking for an outstanding choice.. Established using... ... more

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 16 inch Barrel Mil-Spec Rear Charge Black MIKE45U-R1615-4-MMKIT

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 16 inch Barrel Mil-Spec Rear Charge Black MIKE45U-R1615-4-MMKIT. 45 ACP Complete Upper Receiver Kit was made to be the ideal item for any person looking for an outstanding choice.. Established... ... more

Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EM-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211M3

Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EM-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211M3. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and... ... more

Quarter Circle 10 Complete 9mm Upper w/ PMUR 7.5in Barrel 1/2 - 28 7.5in HG FH Black QC-CU-G9-7.5

Quarter Circle 10 Complete 9mm Upper w/ PMUR 7.5in Barrel 1/2 - 28 7.5in HG FH Black QC-CU-G9-7.5. 355 Caliber Features of Quarter Circle 10 Complete 9mm Upper w/ PMUR: QC10 Billet Rear Charging Upper Receiver 9x19mm QPQ Nitride-Treated Barrel... ... more

Angstadt Arms Complete Upper Assembly AR-15 10 in Handguard 10.5 in Barrel A2 Flash Hider Picatinny/M-LOK 1/2x36 Black AAUT009105

Angstadt Arms Complete Upper Assembly AR-15 10 in Handguard 10.5 in Barrel A2 Flash Hider Picatinny/M-LOK 1/2x36 Black AAUT009105. Ready to run with any 9MM AR-15 dedicated lower receiver. Specifications for Angstadt Arms AR-15 Complete 9mm Upper... ... more

Quarter Circle 10 .45 ACP Barrel 10.5in Black Nitride QC-BRL-45-10.5

Quarter Circle 10 .45 ACP Barrel 10.5in Black Nitride QC-BRL-45-10.5. 45 ACP Barrel to ensure you're shooting with maximum precision. These Rifle Barrels made by Quarter Circle 10 are designed with a QPQ nitride finish for superior strength and... ... more

Jacob Grey Firearms Complete Upper Assembly AR-10 .308 Winchester 16in 1-10 Twist 5/8x24 Thread Black 308CUA16

Jacob Grey Firearms Complete Upper Assembly AR-10 .308 Winchester 16in 1-10 Twist 5/8x24 Thread Black 308CUA16. Not only have we designed an upper receiver that is aggressive in styling but also weighs less than standard AR-10 Upper Receivers. Excess... ... more

Quarter Circle 10 Complete 9mm Upper w/ PMUR 16in Barrel 1/2 - 28 15in HG FH Black QC-CU-G9-16

Quarter Circle 10 Complete 9mm Upper w/ PMUR 16in Barrel 1/2 - 28 15in HG FH Black QC-CU-G9-16. 355 Caliber Features of Quarter Circle 10 Complete 9mm Upper w/ PMUR: QC10 Billet Rear Charging Upper Receiver 9x19mm QPQ Nitride-Treated Barrel Compatible... ... more

Quarter Circle 10 .45 ACP Glock Style Bolt Assembly Law Tactical Modified Black QC-A-BLT-G-45-LT

Quarter Circle 10 .45 ACP Glock Style Bolt Assembly Law Tactical Modified Black QC-A-BLT-G-45-LT. 45 ACP Bolt Modified for compatibility with Law Tactical AR Folding Stock Adaptor Advanced blowback design Manufactured to function reliably with Glock... ... more

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 16 inch Barrel Front Charge Black MIKE45U-F1615-4-MMKIT

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 16 inch Barrel Front Charge Black MIKE45U-F1615-4-MMKIT. 45 ACP Complete Upper Receiver Kit was made to be the ideal item for any person looking for an outstanding choice.. Established using some... ... more

FM Products FM-45 AR Upper Receiver w/ Micro Brake .45 Caliber 10 inch 8.5in Barrel Ultralight ProfileFlash Supressor Black FM45-FS-109

FM Products FM-45 AR Upper Receiver w/ Micro Brake .45 Caliber 10 inch 8.5in Barrel Ultralight ProfileFlash Supressor Black FM45-FS-109. 45 ACP .45 Glock or another 45cal pistol magazine you can feed these FM Products FM-45 Complete Uppers designed by... ... more

Radical Firearms AR-15 Complete Upper Assembly 16in 7.62x39 4150V HBAR Contour 1/10 Twist 12in MHR M-LOK A2 Flash Hider Black CFU16-7.62X39HBAR-12MHR

Radical Firearms AR-15 Complete Upper Assembly 16in 7.62x39 4150V HBAR Contour 1/10 Twist 12in MHR M-LOK A2 Flash Hider Black CFU16-7.62X39HBAR-12MHR. This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter.... ... more

Radical Firearms AR-15 Complete Upper Assembly 16in 7.62x39 4150V HBAR Contour 1/10 Twist 12in RPR M-LOK A2 Flash Hider Black CFU16-7.62X39HBAR-12RPR

Radical Firearms AR-15 Complete Upper Assembly 16in 7.62x39 4150V HBAR Contour 1/10 Twist 12in RPR M-LOK A2 Flash Hider Black CFU16-7.62X39HBAR-12RPR. This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter.... ... more

TacFire Complete Upper Assembly 5.56 NATO 10in Type III Hard Anodized Black Large BU-556-10

TacFire Complete Upper Assembly 5.56 NATO 10in Type III Hard Anodized Black Large BU-556-10. 56 NATO barrel along with a M-LOK freefloating handguard. Mil-Spec BCG and charging handle are included in this build. Specifications for TacFire 5.56 NATO... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EQ-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251Q14

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EQ-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251Q14. 300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish these... ... more

Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EQ-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211Q3

Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EQ-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211Q3. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and... ... more

Angstadt Arms AR-15 Complete Upper Assembly with Flash Hider 9mm Luger 10.5 inch Barrel M4 Profile 1-10 Twist 1/2x28 Chromoly Black AAUT109105

Angstadt Arms AR-15 Complete Upper Assembly with Flash Hider 9mm Luger 10.5 inch Barrel M4 Profile 1-10 Twist 1/2x28 Chromoly Black AAUT109105. Ready to run with any 9MM AR-15 dedicated lower receiver. Specifications for Angstadt Arms AR-15 Complete... ... more

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 10 inch Barrel Front Charge Black MIKE45U-F109-B-MMKIT

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 10 inch Barrel Front Charge Black MIKE45U-F109-B-MMKIT. 45 ACP Complete Upper Receiver Kit was made to be the ideal item for any person looking for an outstanding choice.. Established using some... ... more