Works well but not perfect - Lancer Systems L5AWM AR-15 5.56x45mm 10 Round Detachable Rifle Magazine

I love lancer mags. I typically use 30 magazines but I wanted a 20 rounder for a compact AR build. The magazine works well but won't activate the bolt catch on the last round. The mag still works great for zeroing rifles since the shorter mag fits better in a sled and doesn't hit the ground off of a bag.