JP Reduced Power Spring Kit

[ad5md]

Will installing this spring kit reduce the trigger pull on the 15-22? At more or less how many # is the break? If it does really improve the trigger pull I'm planning to do it on mine and also the "set screw trigger job" I saw online (just can't find the set screw from Home Depot-anyone knows the SKU #?) Thanks

 

[erick1987]

I did all that to mine. no big difference. mine breaks at 4.5-5lbs. The big thing is polishing the trigger and hammer mating surfaces. I spent over 30 minutes just polishing the trigger group with a dremmel and polishing compound. Just spend the money on a new trigger if you want to feel a difference.

 

[Majorlk]

Unless you take the time and effort to polish all the engagement surfaces on the trigger, disconnector and hammer, the spring set will give you maybe a one pound reduction in trigger pull. The stock trigger breaks at anywhere from 5 to 7 pounds.

The set screw is a plain vanilla 1/4x28, 1/4" long. This mod will not actually change the trigger pull. What is does is to decrease the depth of engagement between the hammer and trigger hooks and reduce the length of the trigger pull.

At best, don't expect to get your trigger pull much below 5 pounds.

 

[ad5md]

Tnx for the replies guys. I guess changing the whole trigger group will be the practical way. Anyone out here with experience on the JARD one? Tnx

 

[Majorlk]

Tnx for the replies guys. I guess changing the whole trigger group will be the practical way. Anyone out here with experience on the JARD one? Tnx

I have the Jard single-stage adjustable. I have a 2.2 lb trigger pull with no creep. That said, unless you have experience with AR-15 triggers, I recommend you get the non-adjustable model with your desired pull weight.

 

[ad5md]

I have the Jard single-stage adjustable. I have a 2.2 lb trigger pull with no creep. That said, unless you have experience with AR-15 triggers, I recommend you get the non-adjustable model with your desired pull weight.

Tnx Majorlk. I do have the JP EZ on my AR which works really good. Am I right, the one for the 15-22 is the small pin version? I'm thinking of getting the 2# model, is that the same one you have?

 

[Majorlk]

Yes, you want the small pin version. I played with three trigger springs before settling on the 1.5 pound spring. It gives me an actual 2.2 pull. The pull weights are not exact, no matter which spring you get. The 2 pound spring wil probable yield a 2.5 to 2.8 actual weight.

 

[ad5md]

Yes, you want the small pin version. I played with three trigger springs before settling on the 1.5 pound spring. It gives me an actual 2.2 pull. The pull weights are not exact, no matter which spring you get. The 2 pound spring wil probable yield a 2.5 to 2.8 actual weight.

Got it.....tnx very much

 

[stavman11]

I just tested Mine today, actually like 1/2hr ago... Kinda Funny you Posted this

Had my 15-22 returned from S&W for Warranty... Busted Firing pin and they wanted ta see why... so no Biggy

I had put my Timney Trigger in my S&W Sport... and really Liked it... so put the stock trigger in with Both Yellow JP Springs... Figured Id Just run with it

So tested the Pull..... was 4.6 4.7 4.5 well you get the idea..... Not what I wanted for the 15-22 especially if I put the Slidefire back on it....

I tested the Timeny on my Sport last week and was 3.1 3.2 3.15....... so really Nice Pull.....

Needless to say the timney went back into my 15-22... and if needed... my Sport will get a new Polished Trigger from a Buddy of Mine


FYI

 

[Chris Puza]

I installed the JP springs in mine . It reduced the trigger pull a bit. The key for me was the whole process seems to have smoothed the trigger mechanism out. I also looked at replacing the trigger group but just can't justify the cost of it at this time. But -- at the end of the day I had a smoother pull and had learned a lot.

P.S. -- Having shot my first steel challenge -- I may need to revisit the full trigger job...

 

[Majorlk]

Replacing the springs and polishing the parts is OK for plinking and other casual shooting, but competition demands a FCG with minimal trigger travel, over travel and reset time.

 

[Bat Guano]

I put the JP yellow springs in my 15-22, also got a 1 pound reduction as per my Lyman gauge. Got a few misfires, too. Had a spare Jard non-adjustable with the 3 pound spring so put that in. I'd have to look at my notes but I had to do a little fitting to install it. Wound up with a nice 3.5 pound pull which is a lot easier to work with.

Installed a Geissele trigger in another AR a few weeks ago. Worth every penny and then some.

 

[Chris Puza]

A new trigger group will be my next investment. Need to take a bit of a "breather" on the investment side (per my chief financial officer). I'll probably pick one up sometime in the fall.

 

[Majorlk]

I put the JP yellow springs in my 15-22, also got a 1 pound reduction as per my Lyman gauge. Got a few misfires, too. Had a spare Jard non-adjustable with the 3 pound spring so put that in. I'd have to look at my notes but I had to do a little fitting to install it. Wound up with a nice 3.5 pound pull which is a lot easier to work with.

Installed a Geissele trigger in another AR a few weeks ago. Worth every penny and then some.

Interesting about the fitting ...

It took all of 20 minutes to replace the stock FCG with the Jard. Didn't require any fitting or changes to the lower.

 

[Rundover]

I am Leary about putting lower poundage hammer springs in a rimfife wepon. Rimfife wepons need all the help they can get to ignite the load so if you go with weaker springs you may have misfires. From an engineers perspective the hammer spring should be bearly felt. It's the trigger spring and friction on the moving parts that give you the trigger pull weight.

 

[Majorlk]

It's rimfire weapons ...

There is no problem with the JP springs. The major difference is in the trigger spring, not the hammer spring. A properly engineered replacement hammer spring will not cause problems except in very unusual circumstances. Cutting springs is another matter.

 

[erick1987]

I took mine apart today and did some wet sanding with 2000 grit sand paper and a lot more polishing. Cleaned and lightly lubed. Rechecked my pull and it went from 4.5-5 lbs to 4 lbs +-1 oz consistently. I don't recomend the sand paper for a novice gunsmith.

Sent from my ADR6350 using Tapatalk 2

 

[Dirt Dart]

I don't recomend the sand paper for a novice gunsmith.

I've seen AR trigger groups reduced to junk by trained gunsmiths with sandpaper.

If you don't have good training on stoning hammer and sear surfaces, I would not recommend taking sandpaper to your gun parts.

 

[erick1987]

I've seen AR trigger groups reduced to junk by trained gunsmiths with sandpaper.

If you don't have good training on stoning hammer and sear surfaces, I would not recommend taking sandpaper to your gun parts.

That's why I chose 2000 grit wet by hand instead of 200 grit. Lol. Polishing metal not smoothing wood. this is where good measurements and a good dial caliper come in handy.

Sent from my ADR6350 using Tapatalk 2

 

[Majorlk]

Personally, I prefer a medium to hard Arkansas stone. There are several specifically shaped and sized for stoning hooks and sears. And they stay perfectly flat, something not always possible with sandpaper.