J P ENTERPRISES - Adjustable/Reversible Selector

JP Enterprises hit one out of the park with this safety selector! Being a gunsmith and working with quality parts is a pleasure. I found that the instructions very easy to follow and little fitting required. Having a selector that is adjustable removes all play when on safe, giving a rock solid feel.The thumb rest is deeper and has a shelf for no miss or slip engagement.Being screwed from both sides makes it a tight fit.

I installed this about a year ago when all my other internal lower parts were standard (including the trigger) and it worked perfectly. Easy installation, very nice machining (no sloppiness or excessive depth of the detent groove as you will sometimes see with a standard part) which makes for excellent, smooth feel and safety engagement/disengagement (as well as quietness). No fitting was required other than adjusting one screw. I was excited to have an ambi safety, since I am left handed, and liked that it was advertised as working with "any aftermarket trigger" (I'm quoting from their website, here), as I planned to install one down the road. After a few months of AR bliss I decided to install a Geiselle SSA trigger. I installed the trigger, cocked the rifle, switched the selector to "fire," pulled the trigger, and nothing... I swapped the JP selector for a standard one, and the trigger worked beautifully. Switching back to the JP and watching the trigger movement, I noticed that the JP was not allowing the Geissele to travel enough to release the hammer. The tail of the trigger was hitting the safety before the sear could release. This is how the safety is supposed to work when it is engaged in "safe" mode. So in effect, with this safety I effectively get "safe" mode when the selector was switched to both "safe" and "fire" modes. Pulling the safety again and visually comparing it to the standard, I could see that the JP's machined flat for "fire" was significantly shallower than the standard safety's. The difference is on the order of a couple mm, which is huge considering that this part isn't very large. It is clear that they did this because there is a transverse hole drilled in the thing (for the adjustable "safe" mode stop). I guess the designers were concerned that if they machined the thing to standard dimensions that it would be too weak. So I'm back to using the standard safety for the moment so I can actually fire my rifle. I've been thinking about machining or filing down the "fire" shelf some to see if I can make enough room for the trigger to work, but I'm not sure if that's such a good idea. It might not have enough meat there before hitting the screw hole. I'm probably going to try some competing offerings before I resort to that. I just don't see how they can claim that the thing works with all aftermarket triggers when it clearly has a travel limitation that the standard design does not. It does not work with the Geissele SSA, anyway.