Yes, there is, it replaces the actual latch with a "New latch" with a lever welded to it so you can press it from the LEFT side of the lower receiver.. Note: It will be just below the bolt release, so take care when you slam your plam on the bolt release during a mag change, you may drop a mag, slam a new mag in, and plan to slam the bolt release and also the mag release as well... Seen it done on the range with Leftys... Pretty funny to see grown Officers pull the trigger on a live course and no mag is in the weapon.. Truely a Kodac moment..