Complete an AR-15 lower receiver build or keep essential replacement parts on hand with the Ruger AR-15 Lower Parts Spring and Pin Kit. Built to Ruger’s standards for rugged reliability, this kit includes many of the small springs, pins, detents, and retainers commonly needed during lower receiver assembly, maintenance, or repair. The kit includes hammer, disconnector, trigger, magazine catch, bolt catch, takedown, buffer retainer, and ejector-related components, along with trigger pins, a bolt catch plunger and pin, a safety selector detent, and a trigger guard pin. It is a practical choice for AR-15 builders, armorers, and shooters who want factory Ruger replacement components available at the workbench or in a spare-parts kit. These components are intended for AR-15-pattern firearms, but compatibility can vary due to differences among manufacturers and individual firearm configurations. Ruger does not guarantee fit or performance in every platform. Installation by a qualified gunsmith is recommended to ensure proper function and safety.

Kit Includes:
Hammer & Hammer Spring
Disconnector & Disconnector Spring
Standard AR “GI” Trigger & Trigger Spring
Trigger / Hammer Pins (x2)
Safety Selector & Safety Selector Detent
Ejector Spring
Magazine Catch, Button, & Spring
Bolt Catch, Spring, Plunger, & Pin
Takedown Spring Detents (x2) & Takedown Springs (x2)
Pivot Pin & Takedown Pin
Buffer Retainer & Buffer Retainer Spring
Trigger Guard Assembly & Trigger Guard Pin
A2 Pistol Grip, Grip Screw, Grip Screw Washer, & Adjustment Screw

Brand: Ruger
Model: AR Lower Parts Kit
Function: Provides all internal components, fire control group, and grip hardware to fully assemble an AR-15 pattern lower receiver.
Material: Mil-spec steel alloy and polymer
Finish: Phosphate coated steel.