LBE Unlimited AR-15 Bolt Catch Plunger Spring 20pk - Black 1117 Steel

The LBE Unlimited ARBCS20PK is a 20-pack of replacement bolt catch plunger springs built for the AR-15 platform. Each spring is cut from 1117 steel and finished in black to Mil-Spec dimensions, giving armorers, builders, and gunsmiths a reliable bench supply for AR-15 lower receiver work.

The bolt catch plunger spring sits inside the lower receiver and provides the upward tension that engages the bolt catch plunger with the bolt catch lever, keeping the bolt catch positively indexed in either the locked-open or released position. A 20-pack keeps your bench, armory, or shop stocked for multiple builds and repairs without mid-job reorders.

These springs are dimensionally matched to standard Mil-Spec bolt catch assemblies and serve as direct replacements for the spring found in the LBE Unlimited ARBCASY Mil-Spec Bolt Catch Assembly as well as other Mil-Spec bolt catch units on the market. They are made in the USA to consistent tolerances for reliable fit and function.

Whether you are running a high-volume armory, assembling lowers from parts kits, or simply keeping spares on hand for your own rifles, the LBE Unlimited 20-pack of 1117 steel bolt catch plunger springs delivers the consistent Mil-Spec fit your builds demand.