Seekins Precision 0011510057 Bolt Catch Enhanced Mil-Spec Black Melonite Steel AR-15 Accessories Miscellaneous A firm crimp improves accuracy

A firm crimp improves accuracy because pressure must build to a higher level before the bullet begins to move

With twice the capacity of the single mag case

Tritium does not need batteries

The trigger is also CNC machined

Seekins Precision 0011510057 Bolt Catch Enhanced Mil-Spec Black Melonite Steel AR-15 Accessories Miscellaneous A firm crimp improves accuracyThe Seekins Precision Enhanced Bolt Catch is an easy to install upgrade that improves the functionality of any Mil Spec lower receiver. This oversized bolt catch has an aggressive diamond texture for easy and fast manipulation. Compatible with any AR 15 mil spec lower receiver