Anyone tried the JP trigger spring??

[kramden]

If so was it worth it? Also thinking of getting the adjustable screw to reduce the trigger take up.

 

[Ronbo]

What I have used is the reduced power JP springs in a 223 AR15 there are three in the kit hammer, trigger and disconnector spring for about $10. They do lighten the trigger pull quite a bit but the reduced power hammer spring will not work with hard primer steel cased Russian ammunition but is fine with good quality ammuntion. Have not heard of a trigger over travel adjustment from JP. Have done this myself by drilling and tapping a 8-32 set screw into the rear of the standard trigger, the screw is adjusted to take the creep out of the trigger. To drill it the trigger is a hardened part and have heated the rear of the trigger to red hot with a map torch, then drilled with a titanium bit tapped for set screw adjusted it in the lower and some lock tight on the set screw threads to keep it in place.

 

[Racer X]

You probably want the JP Enhanced Reliability set 4-5# on a mil-spec trigger group that has had basic clean-up of the contact surfaces.

"Precision-calibrated springs produce a consistent pull on a stock JP M15 rifle trigger, while preserving ignition reliability with U.S.-manufactured ammunition. This trigger and hammer spring kit produces a 3.5 to 4 lb. trigger pull. These springs are designed to be optimal with JP Enterprises fire control groups but can also be used with properly prepared (instructions included) mil-spec trigger/hammer components to produce a 4- to 5-lb. pull with a smooth “roll off feel and good control. Install this spring kit in your AR-15 trigger group to ensure reliable primer strikes on hard military surplus ammo."

JP Enterprises Enhanced Ignition Reliability Trigger Spring Kit | 10% Off 4.8 Star Rating Free Shipping over $49! Their kit includes the sear spring as well.

JP Enterprises AR-15 Enhanced ignition reliability spring kit with red hammer spring JPS3.5T

 

[buckyjames1]

I installed the pre travel/take up screw in my AR15

1. JoeBob's AR15 Grip Screw Trigger Adjuster . there are several makers

2. Was it worth it: Absolutely, older Rock River Arms had more pretravel than I liked, follow directions with the new screw, easy install, it just replaces the pistol grip screw, make a few minor length adjustments.

3. No need to go the old route and drill/tap adjustment screws when using this simple repalcement.

4. Did some light polishing work on inner trigger assembly faces and have a nice 3lb 14oz standard trigger. Variances were also reduced, polished up a bit and now it will consistently break +/-3oz.
10 pulls varied from 3lb 11oz. - 3lb. 14oz