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Upper Receivers/Conv Kits

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Radical Firearms Complete Upper Assembly, 223 Rem/556NATO, 16 SOCOM (Mid) Barrel, 15 RPR, Zero Impulse Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU16-5.56SOC-15RPR-ZS Radical Firearms Complete Upper Assembly, 224 Valkyrie, 18 Barrel, 1:7 Twist, 15 RPR, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU18-224VAL-15RPR Radical Firearms Complete Upper Assembly, 300 Blackout, 16 HBAR Contour Barrel, 15 FCR, A2 Flash Hider, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU16-300HBAR-15FCR
Radical Firearms Complete Upper Assembly, 223 Rem/556NATO, 16" SOCOM (Mid) Barrel, 15" RPR, Zero Impulse Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group Manufacturer: Radical Firearms
Manufacturer Part #: CFU16-5.56SOC-15RPR-ZS
MSRP: $463.95
Our Price:  $416.95 
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Radical Firearms Complete Upper Assembly, 224 Valkyrie, 18" Barrel, 1:7 Twist, 15" RPR, Black Finish, Includes Charging Handle and Bolt Carrier Group Manufacturer: Radical Firearms
Manufacturer Part #: CFU18-224VAL-15RPR
MSRP: $579.95
Our Price:  $521.19 
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In Stock 
Radical Firearms Complete Upper Assembly, 300 Blackout, 16" HBAR Contour Barrel, 15" FCR, A2 Flash Hider, Black Finish, Includes Charging Handle and Bolt Carrier Group Manufacturer: Radical Firearms
Manufacturer Part #: CFU16-300HBAR-15FCR
MSRP: $383.95
Our Price:  $337.68 
In Stock 
Radical Firearms Complete Upper Assembly, 300 Blackout, 16 HBAR Contour Barrel, 15 FCR, A2 Flash Hider, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU16-300HBAR-15FCR Radical Firearms Complete Upper Assembly, 458 Socom, 16 Barrel, .936 Gas block, 15 MHR Handguard, Panzer Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU16-458SOC-15MHR Radical Firearms Complete Upper Assembly, 458 Socom, 16 Barrel, .936 Gas block, 15 MHR Handguard, Panzer Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU16-458SOC-15MHR
Radical Firearms Complete Upper Assembly, 300 Blackout, 16" HBAR Contour Barrel, 15" FCR, A2 Flash Hider, Black Finish, Includes Charging Handle and Bolt Carrier Group Manufacturer: Radical Firearms
Manufacturer Part #: CFU16-300HBAR-15FCR
MSRP: $383.95
Our Price:  $337.68 
In Stock 
Radical Firearms Complete Upper Assembly, 458 Socom, 16" Barrel, .936 Gas block, 15" MHR Handguard, Panzer Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group Manufacturer: Radical Firearms
Manufacturer Part #: CFU16-458SOC-15MHR
MSRP: $589.95
Our Price:  $530.19 
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Radical Firearms Complete Upper Assembly, 458 Socom, 16" Barrel, .936 Gas block, 15" MHR Handguard, Panzer Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group Manufacturer: Radical Firearms
Manufacturer Part #: CFU16-458SOC-15MHR
MSRP: $589.95
Our Price:  $499.67 
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Radical Firearms Complete Upper Assembly, 6.5 Grendel, 20 Barrel, 1:9 Twist, 15 RPR, Pepper Pot Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group CFU20-6.5-SS-MED-15RPR Rosco Manufacturing Bloodline Barrel, 556NATO, 10.5, Black Nitride Finish, 1:7 Twist, 1/2x28, 4150 CMV BL-105-M4-556-7-C Rosco Manufacturing Bloodline Barrel, 556NATO, 11.5, Black Nitride Finish, 1:7 Twist, 1/2x28, 4150 CMV BL-115-M4-556-7-C
Radical Firearms Complete Upper Assembly, 6.5 Grendel, 20" Barrel, 1:9 Twist, 15" RPR, Pepper Pot Muzzle Brake, Black Finish, Includes Charging Handle and Bolt Carrier Group Manufacturer: Radical Firearms
Manufacturer Part #: CFU20-6.5-SS-MED-15RPR
MSRP: $599.95
Our Price:  $539.17 
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Rosco Manufacturing Bloodline Barrel, 556NATO, 10.5", Black Nitride Finish, 1:7 Twist, 1/2x28, 4150 CMV Manufacturer: Rosco Manufacturing
Manufacturer Part #: BL-105-M4-556-7-C
MSRP: $130.00
Our Price:  $119.20 
In Stock 
Rosco Manufacturing Bloodline Barrel, 556NATO, 11.5", Black Nitride Finish, 1:7 Twist, 1/2x28, 4150 CMV Manufacturer: Rosco Manufacturing
Manufacturer Part #: BL-115-M4-556-7-C
MSRP: $135.00
Our Price:  $123.78 
In Stock 
Rosco Manufacturing Bloodline Barrel, 556NATO, 14.5, Black Nitride Finish, 1:7 Twist, 1/2x28, 4150 CMV BL-145-M4-556-7-C Rosco Manufacturing Bloodline Barrel, 9MM, 14.5, Black Nitride Finish, 1:10 Twist, 1/2x28, 4150 CMV BL-145-M4-9mm-10 Rosco Manufacturing Bloodline Barrel, 9MM, 5.5, Black Nitride Finish, 1:10 Twist, 1/2x28, 4150 CMV BL-55-M4-9mm-10
Rosco Manufacturing Bloodline Barrel, 556NATO, 14.5", Black Nitride Finish, 1:7 Twist, 1/2x28, 4150 CMV Manufacturer: Rosco Manufacturing
Manufacturer Part #: BL-145-M4-556-7-C
MSRP: $145.00
Our Price:  $131.74 
In Stock 
Rosco Manufacturing Bloodline Barrel, 9MM, 14.5", Black Nitride Finish, 1:10 Twist, 1/2x28, 4150 CMV Manufacturer: Rosco Manufacturing
Manufacturer Part #: BL-145-M4-9mm-10
MSRP: $140.00
Our Price:  $127.20 
In Stock 
Rosco Manufacturing Bloodline Barrel, 9MM, 5.5", Black Nitride Finish, 1:10 Twist, 1/2x28, 4150 CMV Manufacturer: Rosco Manufacturing
Manufacturer Part #: BL-55-M4-9mm-10
MSRP: $105.00
Our Price:  $98.02 
In Stock 
Rosco Manufacturing Bloodline Barrel, 9MM, 7.5, Black Nitride Finish, 1:10 Twist, 1/2x28, 4150 CMV BL-75-M4-9mm-10 Rosco Manufacturing Bloodline Heavy Barrel, 300BLK, 10.5, Black Nitride Finish, 1:7 Twist, 5/8x24, 4150 CMV BL-105-HB-300BLK-7-P Rosco Manufacturing Bloodline Heavy Barrel, 300BLK, 8.2, Black Nitride Finish, 1:7 Twist, 5/8x24, 4150 CMV BL-82-HB-300BLK-7-P
Rosco Manufacturing Bloodline Barrel, 9MM, 7.5", Black Nitride Finish, 1:10 Twist, 1/2x28, 4150 CMV Manufacturer: Rosco Manufacturing
Manufacturer Part #: BL-75-M4-9mm-10
MSRP: $115.00
Our Price:  $106.40 
In Stock 
Rosco Manufacturing Bloodline Heavy Barrel, 300BLK, 10.5", Black Nitride Finish, 1:7 Twist, 5/8x24, 4150 CMV Manufacturer: Rosco Manufacturing
Manufacturer Part #: BL-105-HB-300BLK-7-P
MSRP: $155.00
Our Price:  $140.83 
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Rosco Manufacturing Bloodline Heavy Barrel, 300BLK, 8.2", Black Nitride Finish, 1:7 Twist, 5/8x24, 4150 CMV Manufacturer: Rosco Manufacturing
Manufacturer Part #: BL-82-HB-300BLK-7-P
MSRP: $145.00
Our Price:  $131.74 
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Rosco Manufacturing Purebred Barrel, 223WYLDE, 14.5, Bead Blasted Finish, 1:8 Twist, 1/2x28, 416R PB-145-GVT-223W-8-M Rosco Manufacturing Purebred Heavy Barrel, 300BLK, 10.5, Bead Blasted Finish, 1:7 Twist, 5/8x24, 416R PB-105-HB-300BLK-7-P Rosco Manufacturing Purebred Heavy Barrel, 300BLK, 8.2, Bead Blasted Finish, 1:7 Twist, 5/8x24, 416R PB-82-HB-300BLK-7-P
Rosco Manufacturing Purebred Barrel, 223WYLDE, 14.5", Bead Blasted Finish, 1:8 Twist, 1/2x28, 416R Manufacturer: Rosco Manufacturing
Manufacturer Part #: PB-145-GVT-223W-8-M
MSRP: $175.00
Our Price:  $157.54 
In Stock 
Rosco Manufacturing Purebred Heavy Barrel, 300BLK, 10.5", Bead Blasted Finish, 1:7 Twist, 5/8x24, 416R Manufacturer: Rosco Manufacturing
Manufacturer Part #: PB-105-HB-300BLK-7-P
MSRP: $200.00
Our Price:  $180.05 
Sorry Temporarily Out of Stock 
Rosco Manufacturing Purebred Heavy Barrel, 300BLK, 8.2", Bead Blasted Finish, 1:7 Twist, 5/8x24, 416R Manufacturer: Rosco Manufacturing
Manufacturer Part #: PB-82-HB-300BLK-7-P
MSRP: $180.00
Our Price:  $162.03 
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Ruger 9MM Conversion Kit, Black Finish, 1 Mag, Fits LC380, Fixed Sights, 7Rd 90499 SanTan Tactical STT-15, Upper, 223 Rem, 556NATO, Black, FT STT-BB-PILLAR-1 SanTan Tactical STT-15, Upper, 223 Rem, 556NATO, Black, FT STT-PILLAR-1
Ruger 9MM Conversion Kit, Black Finish, 1 Mag, Fits LC380, Fixed Sights, 7Rd Manufacturer: Ruger
Manufacturer Part #: 90499
MSRP: $299.00
Our Price:  $170.34 
Sorry Temporarily Out of Stock 
SanTan Tactical STT-15, Upper, 223 Rem, 556NATO, Black, FT Manufacturer: SanTan Tactical
Manufacturer Part #: STT-BB-PILLAR-1
MSRP: $259.49
Our Price:  $220.50 
In Stock 
SanTan Tactical STT-15, Upper, 223 Rem, 556NATO, Black, FT Manufacturer: SanTan Tactical
Manufacturer Part #: STT-PILLAR-1
MSRP: $229.49
Our Price:  $195.00 
In Stock 
SanTan Tactical Upper, 223 Rem, 556NATO, Black, FT STT-15-LT-PILLAR-UPPER Seekins Precision Barrel, .223 WYLDE, 10.5, Black Finish, Stainless, Match Grade, 5R Rifling, 1:8 Twist 10120005 Seekins Precision Barrel, .223 WYLDE, 14.5, Black Finish, Stainless, Match Grade, 5R Rifling, 1:8 Twist, Mid Length Gas 10120013
SanTan Tactical Upper, 223 Rem, 556NATO, Black, FT Manufacturer: SanTan Tactical
Manufacturer Part #: STT-15-LT-PILLAR-UPPER
MSRP: $209.59
Our Price:  $178.09 
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Seekins Precision Barrel, .223 WYLDE, 10.5", Black Finish, Stainless, Match Grade, 5R Rifling, 1:8 Twist Manufacturer: Seekins Precision
Manufacturer Part #: 10120005
MSRP: $289.00
Our Price:  $250.11 
In Stock 
Seekins Precision Barrel, .223 WYLDE, 14.5", Black Finish, Stainless, Match Grade, 5R Rifling, 1:8 Twist, Mid Length Gas Manufacturer: Seekins Precision
Manufacturer Part #: 10120013
MSRP: $289.00
Our Price:  $250.11 
In Stock 
Seekins Precision Barrel, 300 Blackout, 10.5, Black Finish, Stainless, Match Grade, 5R Rifling, 1:7 Twist 10120007 Seekins Precision Barrel, 300 Blackout, 8, Black Finish, Stainless, Match Grade, 5R Rifling, 1:7 Twist 10120003 Seekins Precision Billet Upper, 223 Rem, Black Finish 0010900009
Seekins Precision Barrel, 300 Blackout, 10.5", Black Finish, Stainless, Match Grade, 5R Rifling, 1:7 Twist Manufacturer: Seekins Precision
Manufacturer Part #: 10120007
MSRP: $289.00
Our Price:  $250.11 
In Stock 
Seekins Precision Barrel, 300 Blackout, 8", Black Finish, Stainless, Match Grade, 5R Rifling, 1:7 Twist Manufacturer: Seekins Precision
Manufacturer Part #: 10120003
MSRP: $289.00
Our Price:  $250.11 
In Stock 
Seekins Precision Billet Upper, 223 Rem, Black Finish Manufacturer: Seekins Precision
Manufacturer Part #: 0010900009
MSRP: $239.00
Our Price:  $202.33 
In Stock 
Seekins Precision Integrated Rail Mounting Technology, Billet Upper, 223 Rem/556NATO, Black Finish 0010900007 Seekins Precision iRMT-3 V3, Billet Upper, 223 Rem/556NATO, Only Fits SP3R V3 Rail, Black Finish, Only Compatible w/Seekins Precision SP3R V3 Rail 0010900011 Seekins Precision NX16 Complete Upper, .223 WYLDE, 16, 1:8 Twist, 15 NOXs M-LOK Rail, Black Finish 0011100077
Seekins Precision Integrated Rail Mounting Technology, Billet Upper, 223 Rem/556NATO, Black Finish Manufacturer: Seekins Precision
Manufacturer Part #: 0010900007
MSRP: $249.00
Our Price:  $208.86 
In Stock 
Seekins Precision iRMT-3 V3, Billet Upper, 223 Rem/556NATO, Only Fits SP3R V3 Rail, Black Finish, Only Compatible w/Seekins Precision SP3R V3 Rail Manufacturer: Seekins Precision
Manufacturer Part #: 0010900011
MSRP: $269.00
Our Price:  $215.39 
In Stock 
Seekins Precision NX16 Complete Upper, .223 WYLDE, 16", 1:8 Twist, 15" NOXs M-LOK Rail, Black Finish Manufacturer: Seekins Precision
Manufacturer Part #: 0011100077
MSRP: $899.00
Our Price:  $841.95 
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Displaying 121 to 150 (of 187 products)
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