LBE Unlimited ARBCS20PK Bolt Catch AR-15 Black 1117 Steel 20 Pack
https://www.tandktactical.com/shop/706612407519-lbe-unlimited-arbcs20pk-bolt-catch-ar-15-black-1117-steel-20-pack-25936
https://www.tandktactical.com/web/image/product.template/25936/image_1920?unique=f06a903
LBE AR15 Bolt Catch Plunger made from 1117 Steel. Pack of 20.
