This is a Patriot Ordnance Factory , model 00667.
The new enhanced universal bolt catch is just another example of POF's continuation of innovation. The large angled bolt catch pad allows for faster bolt catch activation to clear the rifle. It also contains a wider tooth for more effective magazine follower engagement.
Features:
Fits Mil-Spec Lower
Faster Bolt Activation
Wider Tooth for Magazine Follower Engagement