This is a Bastion Lever, model GL-SLDLOCK.
The Bastion Extended Stainless Steel Slide Lock Lever makes it easier to remove the slide. Compatible with Glock Models 17-41 Gen 1-4 ONLY
Features:
Brushed Silver (Not Chrome)
Fits Glock Models Gen1-4
WILL NOT FIT G36, G42, or G43 MODELS