I have it in my AR and I really like it... very easy to install, clean & crisp break-up, short travel and amazingly light pull... in fact, the pull weight is more towards 3.5lbs than 4.5lbs, so be aware if your intent is to go in national level competitions... this CMC supermatch trigger might be too light. But I 've seen that it's possible to ask on special order for one with 4.5lbs from the factory.