Great part, not compatible with all magazine release levers - Battle Arms 9mm Development Enhanced Bolt Catch

This is a well made part, is very sturdy and installation was simple. This issue I ran into was that it made contact with my Strike Industries Ambi mag release lever. So if you have an ambi mag release lever you might want to find a different bolt catch; the larger area on the 'bottom' (the part you'd press to lock the bolt back) is large and might make contact. It was a bummer because this is a great bolt catch. That's the only reason it got 4 stars.