Precision CNC machined from 316 stainless steel bar stock, the Bullet-Proof Recoil Spring Plug by Wilson Combat is engineered for maximum durability, hence the name "Bullet Proof". This replacement recoil spring plug is a perfect way to enhance the look of your pistol. The end of the plug is left un-checkered for a sleek look. These 1911 parts meet or exceed original factory specifications. If you're building a gun, or wish to bring your 1911 back to true mil-spec, these parts will provide exceptional service. May require fitting to specific gun. This recoil plug is .030" long for use with the Bullet Proof (thick) barrel bushing.