AR-15 parts kits are used to provide grouped components for building, repairing, maintaining, or upgrading compatible AR-15 rifles. They can include lower parts, upper parts, springs, pins, detents, controls, and other small components that help complete a rifle setup or support replacement work. Different kits can vary in included parts and intended use depending on the build or repair project. This category includes AR-15 parts kits built for proper fit, dependable function, and practical everyday performance.
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BATTLEARMS AR15/M4 Takedown and Pivot Pin Detent – Precision Fit for Secure Pin Retention
Battle Arms Development$1.00The AR15/M4 Takedown and Pivot Pin Detent is a vital small part that plays a big role in the function of your rifle. This precision-machined detent retains the front and rear takedown pins securely... -
BATTLEARMS AR15/M16 Magazine Catch Spring
Battle Arms Development$3.00AR15/M16 Mil-Spec Magazine Catch Spring -
BATTLEARMS BAD-BCS Threaded Bolt Catch Screw – AR-15 / AR-10
Battle Arms Development$5.30The Battle Arms Development BAD-BCS Threaded Bolt Catch Screw is a small but essential component for AR builders and armorers using lowers that accept a threaded bolt catch screw. Designed with 6-32... -
BATTLEARMS AR15/M16 Carbine Buffer Spring
Battle Arms Development$4.00The AR15/M16 Carbine Buffer Spring is a Mil-Spec replacement recoil spring designed for carbine-length receiver extensions. This essential component ensures proper cycling, smooth operation, and... -
BATTLE ARMS BAD-QRRTP - Quick Release Rear Takedown Pin
Battle Arms Development$30.00BAD-QRRTP Quick Release Rear Takedown Pin Features: Dual Function Easy Pull Head CNC Machined Comes with Detent and Spring Made in the USA! Patent US10101107B1 -
BATTLEARMS BAD-EPS-308 (Enhanced Pin Set) LR-308/SR-25/AR308
Battle Arms Development$29.95BATTLEARMS – BAD-EPS Enhanced Takedown & Pivot Pin Set (AR15/M16/M4/AR9) Item: BAD-EPS SKU: BAD-EPS UPC: 810033780394 Platform Compatibility: AR15 / M16 / M4 / AR9 The BATTLEARMS BAD-EPS®< -
BATTLEARMS AR15/M16 Takedown & Pivot Pin Detent Spring – AR15 Mil-Spec Replacement Part
Battle Arms Development$0.75Replace worn or lost detent springs in your AR15 or M16 rifle with this high-quality Mil-Spec spring from Battle Arms Development. Precision-engineered for reliability and durability, it’s perfect... -
BATTLEARMS BAD-EPS FDE Aluminum Enhanced Takedown and Pivot Pin Set
Battle Arms Development$29.95Battle Arms Development Enhanced Pin Set (BAD-EPS) for the AR15 / M16 / M4 style rifles. The BAD-EPS features the following improvements and features: Precision Swiss CNC machined. AR15 / M16 / M4... -
BATTLEARMS Green Aluminum Enhanced Takedown / Pivot Pin Set
Battle Arms Development$29.95Battle Arms Development Enhanced Pin Set (BAD-EPS) for the AR15 / M16 / M4 style rifles. The BAD-EPS features the following improvements and features: Precision Swiss CNC machined. AR15 / M16 / M4... -
BATTLEARMS BAD-EPS Purple Aluminum Enhanced Takedown and Pivot Pin Set
Battle Arms Development$29.95Battle Arms Development Enhanced Pin Set (BAD-EPS) for the AR15 / M16 / M4 style rifles. Â The BAD-EPS features the following improvements and features: Precision Swiss CNC machined. AR15 / M16 /... -
BATTLEARMS BAD-EPS Blue Aluminum Enhanced Takedown and Pivot Pin Set
Battle Arms Development$29.95Battle Arms Development Enhanced Pin Set (BAD-EPS) for the AR15 / M16 / M4 style rifles. Â The BAD-EPS features the following improvements and features: Precision Swiss CNC machined. AR15 / M16 /... -
BATTLEARMS BATTLE ARMS BAD-EPS Enhanced Takedown and Pivot Pin Set AR15
Battle Arms Development$29.00Battle Arms Development Enhanced Pin Set (BAD-EPS) for the AR15 / M16 / M4 style rifles.  The set consists of the Enhanced Take-down Pin (BAD-ETP) and Enhanced Pivot Pin (BAD-EPP). Precision Swiss... -
BATTLEARMS AR10/LR308 - Ejection Port Cover Pin
Battle Arms Development$3.50The machined steel Ejection Port Cover Rod is the hinge pin that keeps the Ejection Port Cover in place. Unlike the AR15 version, it needs no c-clip. -
BATTLEARMS AR15/M16 - Ejection Port C-Clip
Battle Arms Development$1.00AR15/M16 - Ejection Port C Clip These high quality components will provide excellent fit and reliable function in your AR series rifle and are perfect for upgrading existing components or replacing... -
BATTLEARMS AR15/M16 - Ejection Port Cover Spring
Battle Arms Development$1.00AR15/M16 - Ejection Port Cover Spring These high quality components will provide excellent fit and reliable function in your AR series rifle and are perfect for upgrading existing components or...