Battle Arms Development Enhanced Bolt Catch is designed to fit AR15 style lower receivers. The Enhanced Bolt Catch has been CNC machined from 8620 Heat Treated Steel. It features an oversize control surface for easy engagement and it's lightweight and robust design is Mil-spec compatible. The Enhanced Bolt Catch features a Black Oxide Finish.

Specifications and Features:
Battle Arms Development 100-013-491
Precision CNC Billet 8620 Heat Treated Steel (not cast or MIM)
Oversize Control Surfaces for Easy Engagement
Lightweight but Robust Design (0.42oz - Same as Mil-Spec Bolt Catch with smaller control surfaces)
Raised "T-Shaped" Heel Provides Positive and Distinctive Control Surface for Bolt Lock Back
Compatible with Norgon Ambi-Catch Without Interference
Elegant Tapered Control Surface and Skeletonized Design
Bold Horizontal and Diagonal Serrations Provides Positive Purchase
Versatile, Modular Design for Future Add-On Product(s)
Black Oxide Finish

Fits:
AR-15/M4/M16 style lower receivers