DISCLAIMER:All fire control groups should be installed by a competent armorer or gunsmith AND function checked without live ammunition to make sure the trigger cannot be pulled on safe, and that the trigger does work appropriately on fire PRIOR TO FIRING ANY LIVE AMMUNITION.

The KE Arms Ambi 90/45 Degree Selector is made to be compatible with Mil-Spec Fire Control Groups and our SLT and Rekluse Triggers.  Customers report that they work properly with a wide range of aftermarket trigger groups; always check to make sure it works properly through dry function checks prior to live fire.

Customers have reported that the ambi slector does not work with various Geiselle and LaRue Triggers.  By does not work with; we mean they cannot pull the trigger on fire.

The tail of the trigger of these trigger units is often thicker so they cannot fire on safe with mil-spec selectors.

The selector barrel of our ambi selector has less clearance so it functions in both 90 and 45 degree mode with mil-spec triggers.  

In many cases, this means that the thicker tail of these other match triggers combines with the thicker selector barrel to prevent the trigger from being able to fire on fire.

IF you have this combination of parts that works; your are lucky and the selector hole in your lower may be higher in relation to the trigger allowing for enough clearance.