Ensure your AR-15 build or maintenance is complete with the reliable Ruger 90992 AR Small Parts Kit. This factory-original accessory provides essential springs, pins, and detents designed for mil-spec AR-15 pattern firearms, helping builders, armorers, and shooters avoid downtime from lost or worn components. Key Features Comprehensive selection of 17+ precision components for lower receiver assembly and repair Manufactured to Ruger's exacting standards for consistent fit and function in AR-15 style rifles and pistols Includes critical fire control springs, takedown hardware, bolt catch parts, and buffer retainer assembly Phosphate or black oxide finishes for corrosion resistance and durability Ideal for new builds, routine maintenance, or stocking a spare parts kit What's Included 1 Hammer Spring 1 Disconnector Spring 2 Trigger Pins 1 Trigger Spring 1 Safety Selector Detent 1 Ejector Spring 1 Magazine Catch Spring 1 Bolt Catch Spring 1 Bolt Catch Plunger 1 Bolt Catch Roll Pin 2 Takedown Spring Detents 2 Takedown Springs 1 Buffer Retainer 1 Buffer Retainer Spring 1 Trigger Guard Roll Pin Specifications SKU: 90992 Compatibility: Mil-spec AR-15 pattern lower and upper receivers, including Ruger AR-556 and Harrier models Weight: 1.12 (per product dimensions) Dimensions: 6" L x 4.5" W x 0.5" H Why Choose the Ruger AR Small Parts Kit AR builders and owners often face the frustration of missing small parts during assembly or field maintenance. This kit addresses those pain points by supplying the most commonly needed components in one convenient package, all produced under Ruger's quality control for reliable performance. Whether completing a lower receiver build or keeping essentials on hand, it supports safe, efficient firearm upkeep without the need for multiple individual purchases. Frequently Asked Questions Q: Is this kit compatible with all AR-15 variants? A: It is designed for mil-spec AR-15 pattern firearms. Due to variations in the marketplace, compatibility with every aftermarket receiver cannot be guaranteed; professional installation is recommended. Q: Are these parts OEM quality? A: Yes, they are produced by Ruger to the same standards as components used in their AR-556 and Harrier rifles. Q: Can this kit be used for both upper and lower receiver work? A: The components primarily support lower receiver functions, with some items like the ejector spring applicable to upper receiver maintenance as well.