AR-15, M4, AR-10, and M16 parts include components for maintaining, repairing, upgrading, and customizing popular modern sporting rifle platforms. This category includes replacement parts, internal components, controls, small parts, hardware, and accessories designed for compatible rifle builds and configurations. Whether you are servicing a current rifle, completing a build, or upgrading performance and ergonomics, choosing the correct platform-specific parts helps ensure proper fit and dependable function.
- AR-15 Lowers
- AR-15 Uppers
- AR-15 Triggers
- AR-15 Bolt Carrier Groups / BCG
- AR-15 Stocks
- AR-15 Grips
- AR-15 Buffer / Tubes
- AR-15 Bolt Catch
- AR -15 Magazine Catch
- AR-15 Charging Handles
- AR-15 Safety Selectors
- AR-15 Hand Stops
- AR-15 Forward Assist
- AR-15 Ejection Port Covers & Parts
- AR-15 Handguards & Rails
- AR-15 Barrels
- AR-15 Gas System Parts
- AR-15 Parts & Kits
Filter By
Products List
-
Primary Weapons MK1-09 Mod 1 AR Upper for 300 Blackout, 9.75 Inch Barrel, Black Finish
Primary Weapons$1,129.99PWS MK1-M1U-300BLK9 MK109 MOD1 UPPR 300BO 9.75 The Primary Weapons MK1-M1U-300BLK9 MK109 Mod 1 upper receiver is designed for precision and reliability, making it an excellent choice for enthusiasts and professionals alike. This upper is compatible with... -
Proof Research PR15 Rifle Barrel for .223 Wylde, 14.5-inch, 7 Twist, PXT Finish
PROOF RESEARCH$1,149.99PROOF 152065 PR15 223 WYLDE 14.5 7TW PXT Proof Research PR15 .223 Wylde Rifle Barrel The Proof Research PR15 series barrel is designed for precision shooting and optimal performance in a .223 Wylde chamber. It features a 14.5-inch length with a 7... -
Proof Research PR15 Rifle Barrel for .223 Wylde, 16-inch Threaded, E X Tra Series
PROOF RESEARCH$1,149.99PROOF 152119 PR15 223 WYLDE 16 8TW PXT Proof Research PR15 Rifle Barrel for .223 Wylde The Proof Research PR15 series rifle barrel is designed for precision shooting and durability. It features a 16-inch length with a threaded end, compatible with... -
Proof Research PR15 .223 Wylde 18-inch Extra Taper Barrel
PROOF RESEARCH$1,149.99PROOF 152133 PR15 223 WYLDE 18 8TW PXT Proof Research PR15 .223 Wylde 18-inch Extra Taper BarrelThe Proof Research PR15 series features high-performance rifle barrels designed for precision shooting and durability. This model is chambered in .223... -
Proof Research PR15 6 ARC Barrels - 14.5 Inch, 7.5 Twist, PXT Finish
PROOF RESEARCH$1,149.99PROOF 152164 PR15 6 ARC 14.5 7.5TW PXT Proof Research PR15 6 ARC Barrels - 14.5 Inch, 7.5 Twist, PXT Finish The Proof Research PR15 6 ARC barrel is designed for precision and durability, featuring the proven ARC profile with a 14.5-inch length and a... -
Proof Research PR15 6 Arc Barrel 16 Inch 7.5 Twist PXT
PROOF RESEARCH$1,149.99PROOF 152171 PR15 6 ARC 16 7.5TW PXT Proof Research PR15 6 Arc Barrel 16 Inch 7.5 Twist PXT The Proof Research PR15 6 Arc barrel is a precision-made firearm barrel designed for optimal accuracy and durability. It features a 16-inch length with a 7... -
Proof Research PR15 6 ARC E X Tra Barrel 18 Inch 7.5 Twist PXT Finish
PROOF RESEARCH$1,149.99PROOF 152188 PR15 6 ARC 18 7.5TW PXT Proof Research PR15 6 ARC E X Tra Barrel 18 Inch 7.5 Twist PXT Finish The Proof Research PR15 6 ARC E X Tra barrel is designed for precision shooting and durability. It features a lightweight carbon... -
Proof Research PR15 6 ARC Barrel 20 Inch 7.5 Twist PXT
PROOF RESEARCH$1,149.99PROOF 152195 PR15 6 ARC 20 7.5TW PXT Proof Research PR15 6 ARC Barrel 20 Inch 7.5 Twist PXT The Proof Research PR15 6 ARC barrel is a precision-engineered firearm component designed for optimal performance. Crafted from advanced materials, this... -
Proof Research PR10 6.5 CM E X Tra Barrel with 20 Inch Length and 7.5 Twist PXT Finish
PROOF RESEARCH$1,149.99PROOF 152201 PR10 6.5 CM 20 7.5TW PXT Proof Research PR10 6.5 CM E X Tra Barrel The Proof Research PR10 series barrel is designed for precision rifle shooting, featuring a 6.5 Creedmoor caliber with a 20-inch length. This barrel is constructed with... -
Cobalt Kinetics CK-Pro Receiver Set for Rifle / Green Cerakote Finish
COBALT KINETICS$1,150.99Cobalt Kinetics CK-Pro Receiver Set for Rifle with Green Cerakote Finish The Cobalt Kinetics CK-Pro Receiver Set in CK Green Cerakote is a high-quality firearm component designed for rifles. Crafted from durable aluminum, this receiver set provides... -
Cobalt Kinetics CK-Pro Receiver Set for Rifle in Black Cerakote
COBALT KINETICS$1,150.99Cobalt Kinetics CK-PRO-SET-108-BLK CK-Pro Receiver Set Rifle Black Cerakote The Cobalt Kinetics CK-Pro Receiver Set is a high-quality component designed specifically for rifles, offering durability and precision. Crafted from lightweight aluminum, this... -
Cobalt Kinetics CK-Pro Receiver Set in Flat Dark Earth Cerakote
COBALT KINETICS$1,150.99Cobalt Kinetics CK-PRO-SET-108-FDE CK-Pro Receiver Set Rifle Flat Dark Earth Cerakote The Cobalt Kinetics CK-Pro Receiver Set in Flat Dark Earth Cerakote is a high-quality firearm component designed for precision rifles. Crafted from durable aluminum,... -
Cobalt Kinetics CK-Pro Receiver Set in Flat Dark Earth Cerakote
COBALT KINETICS$1,150.99Cobalt Kinetics CK-PRO-SET-118-FDE CK-Pro Receiver Set Rifle Flat Dark Earth Cerakote The Cobalt Kinetics CK-Pro Receiver Set in Flat Dark Earth Cerakote is a high-quality firearm component designed for rifle enthusiasts and professional shooters... -
Cobalt Kinetics CK-Pro Receiver Set for Rifle in Flat Dark Earth Cerakote
COBALT KINETICS$1,150.99Cobalt Kinetics CK-PRO-SET-13-FDE CK-Pro Receiver Set Rifle Flat Dark Earth Cerakote The Cobalt Kinetics CK-Pro Receiver Set is a high-quality upgrade designed for rifles, offering enhanced durability and a sleek appearance. Crafted from lightweight... -
Primary Weapons MK1-M2U-6ARC 14.5-inch Upper Assembly
Primary Weapons$1,399.99PWS MK1-M2U-6ARC14 MK114 MOD2 UPPR 6ARC 14.5 The Primary Weapons MK1-M2U-6ARC 14.5-inch upper assembly is designed to enhance your firearm's performance and reliability. Crafted with precision, this upper includes the MK114 MOD2 upper receiver and... -
Primary Weapons MK1-M2U-6ARC 18 Upper
Primary Weapons$1,399.99PWS MK1-M2U-6ARC18NC MK118 MOD2 UPPR 6ARC 18 The Primary Weapons MK1-M2U-6ARC 18 Upper is a high-performance firearm component designed for reliable and precise shooting. Crafted to enhance your rifle's capabilities, this upper receiver features... -
Bilson Arms BA-15FCP .338 ARC Rifle 12.5 Inch Threaded Barrel / Flat Dark Earth / Sniper Green 10+1
BILSON ARMS$1,300.99The Bilson Arms BA-15FCP is a compact AR-platform rifle built for shooters who want modern performance, hard-hitting capability, and a distinctive custom finish in a maneuverable package. Chambered in .338 ARC, this rifle is designed to deliver strong... -
HK 81000336 USP40 CMPT V1 40S (2)12R 3.58
HK$1,159.99HK 81000336 USP V1 Compact 40 S&W 12+1 3.58" Black Polygonal Rifled Barrel, Black Serrated Slide, Black Polymer Frame, Black Polymer Grip, Ambidextrous The HK USP (Universal Self-loading Pistol) is an accurate and ultra-reliable handgun. It utilizes... -
BATTLEARMS AUTHORITY ELITE AR15/M4 7.5" 300BLK Complete Billet Upper Receiver
Battle Arms Development$1,099.99Turn your build into a high-performance short-barrel 300 AAC Blackout (300BLK) rifle with this complete billet upper receiver assembly — including a precision 7.5" barrel, full-auto rated BCG, and the RACK-15 ambidextrous charging handle. Built...
