Knights Armament Lower Rec Assmbly Kit SR 15 Iws 25780

These are pretty much the best mostly standard lower with ambi controls that you can buy outside the AXTS lowers, which are far from standard (I will be comparing this to the AXTS as they have the other failure resistant ambi-mag release design available). On to the lower, the trigger is great, the stock is exactly what you'd expect from a SOPMOD, and the finish smooth and consistent (exactly what one would expect from proper anodizing). As for the ambi controls, the left side mag release is the best failure resistant design, and still works with a standard mag catch. The right side bolt release lever is stiff, especially compared to the AXTS, but works exactly as expected, and frankly this specific stiffness is my only gripe with the entire package. The ambi-safety is 90 degree instead of 45, which mostly a matter of preference and the actual lever is great. Compared to the AXTS it lacks the ADAC functionality, but it uses far less non-standard parts so I'd argue it balances out. You'll be happy with either package, and to be frank, to get similar quality trigger and stock you'll pay about the same to either. Highly recommended if you're looking for an ambi control complete lower, though again, you pay for the privilege.