JP Ent. Trigger, Hammer, Disconector Springs

[TATorg]

have had the JP triggergoup for about a year now and the 15-22 had had 18.000 + rounds fed since, a steady diet of mainly cci blazer, but with a healthy helping of cci minimag, cci standard and Lapua (SK) standard. It has fired every single time I pulled the trigger when there was a cartridge in the chamber.

Like Berzerker.... I've had the JP springs in my 15-22 for over a year. ZERO problems. I usually shoot the Winchester 555 package rounds -- Only one FTF round for 2500 plus rounds.

Be very careful on polishing the sear. I suggest placing the sear in a vise and VERY carefully remove the machine marks. Make sure your work does not round over any edges. I don't believe you need to mirror polish the sear, just smooth out the machine marks. The AR 15-22 is not a high end trigger group.

I do not endorse cutting and trigger springs. This changes the torque characteristics of the spring....The trigger spring is not a compression spring. The trigger springs "stores" the energy in the twist, but releases the energy in an perpendicular direction. By cutting a spring leg you change how the spring releases the energy to trip the sear. (attempting to de-geek-ify, the physics of the trigger spring)

Another perspective is: "if cutting the spring is so good, why didn't Gene Stoner, use cut springs in his design ?"

With that being said, If you change the springs, and lightly polish the sear, you will feel a dramatic improvement in the pull and sear release.

Aim small,

Thos.

 

[Star4Ever]

After a period of time: >> Now have over 700 rounds thru the 15-22 with the JP yellow spring set, not a single problem.

 

[Ranger98]

Have them in both my 15-22 and AR ...work great !

 

[intrcul]

A weaker hammer spring increases the chance that there won't be enough force to set the primer off, but I have a few thousand rounds through my yellow 3.5lb JP kit and no FTF's yet.