The Glock inspection slide plate cover is designed for inspecting the amount of engagement between the trigger bar and the striker on your Glock. This inspection plate is made of bright orange polymer and is for inspection only; this plate is not intended for firing ammunition. This plate is shorter than the standard part and allows you to see the striker and trigger bar, and determine the amount of engagement between them. This is a critical armorer's tool to ensure reliable functioning of your Glock. Note: This slide cover plate is for inspection only. This part must be removed from your pistol before firing.