JP trigger spring kit for ARs

Shadow9mm · July 30, 2020, 08:45 PM

I just installed the JP Enterprises Enhanced Reliability Trigger Spring Kit AR-15 3-1/2 lb on mil spec trigger group. It is supposed to be a 3 1/2 lb trigger when it is done.

The trigger group was a mil spec group from PSA. It weighed in at 7.5lb and had a bit of grit and creep. I took the trigger group out, and wiped everything down lightly with some oil just to clean it. I swapped the springs, it came with a trigger, hammer, and disconnect spring. After install it came in a 5.5lb, but the grit and creep were gone. I'm guessing the lighter springs reduced how much you could feel the grit and creep and possible my cleaning helped a little

Over all I feel like it significantly improved a mil spec trigger and for about $11 off midway I'm glad I bought it.

mikejonestkd · July 31, 2020, 03:50 PM

I used the JP spring kits in two rifles, and they worked as advertised. The factory triggers were heavy, gritty, and negatively affected my ability to shoot well.
After $15 and 15 min of work I had acceptable triggers. Not great, but certainly acceptable.

Kreyzhorse · July 31, 2020, 04:35 PM

I like PSA stuff, but their mil spec triggers, and every other mil spec trigger I've felt has room for improvement.

Sounds like a pretty quick and easy improvement without spending a ton of money on an after market drop in trigger.

Shadow9mm · May 6, 2021, 10:52 AM

Just installed another JP Enhanced reliability spring kits in a co-workers rifle. Took it from about 6.9lb down to 4.9lb, a nice predictable 2lb reduction.

Still cant say enough good about the kit. At $11 its still the best bang for the buck trigger job for an AR IMHO.

Joe-ker · May 15, 2021, 08:47 AM

Thanks. I think I will try. At 11$ it’s hard to go wrong.

I did see a comment that in cold temps one guy had too light of primer strikes.

MarkCO · May 15, 2021, 09:29 AM

Maybe with CCI 41s, but with standard primers, I have never seen an issue with the JP kit.

Both of my "mil-spec" triggers have the JP spring kit in them.

Geezerbiker · May 15, 2021, 01:48 PM

I'm still working on my first AR and it's far from done... Anyway I got the lower receiver kit from Midway. The trigger was heavy and gritty. So I do what I always do in that situation and that was to polish the mating surfaces with a very fine knife sharpening stone.

I'm now aware that I may have removed the surface hardening but I couldn't have take more than .001" inch off the trigger and sear. Right now the trigger is around 4 pounds and is smooth and crisp. It remains to be seen if I F'ed it up or not...

Tony

MarkCO · May 15, 2021, 04:08 PM

Tony, just keep an eye on it. It might be fine, might have gone too far. 1000 rounds will let you know.

Shadow9mm · May 15, 2021, 07:49 PM

Quote:

Originally Posted by Geezerbiker

I'm still working on my first AR and it's far from done... Anyway I got the lower receiver kit from Midway. The trigger was heavy and gritty. So I do what I always do in that situation and that was to polish the mating surfaces with a very fine knife sharpening stone.

I'm now aware that I may have removed the surface hardening but I couldn't have take more than .001" inch off the trigger and sear. Right now the trigger is around 4 pounds and is smooth and crisp. It remains to be seen if I F'ed it up or not...

Tony

I have tried taking stones to triggers before. It has always ended up in frustration some times with ruined parts. That's why I switched to the spring kits.

Geezerbiker · May 15, 2021, 08:45 PM

I've been very successful or maybe just lucky but I always seem to make the trigger a little better.

My first trigger job was on my T99 Arisaka. At the time it was my only center fire rifle and the trigger was heavy and gritty. It's still a bit heavy but now it's way smoother. I was only after better not a perfect trigger pull and I was thrilled with the results.

Tony

July 30, 2020, 08:45 PM	#1
Shadow9mm Senior Member Join Date: March 21, 2012 Location: Indianapolis, IN Posts: 3,969	JP trigger spring kit for ARs I just installed the JP Enterprises Enhanced Reliability Trigger Spring Kit AR-15 3-1/2 lb on mil spec trigger group. It is supposed to be a 3 1/2 lb trigger when it is done. The trigger group was a mil spec group from PSA. It weighed in at 7.5lb and had a bit of grit and creep. I took the trigger group out, and wiped everything down lightly with some oil just to clean it. I swapped the springs, it came with a trigger, hammer, and disconnect spring. After install it came in a 5.5lb, but the grit and creep were gone. I'm guessing the lighter springs reduced how much you could feel the grit and creep and possible my cleaning helped a little Over all I feel like it significantly improved a mil spec trigger and for about $11 off midway I'm glad I bought it. __________________ I don't believe in "range fodder" that is why I reload.

July 31, 2020, 03:50 PM	#2
mikejonestkd Senior Member Join Date: January 3, 2006 Location: Brockport, NY Posts: 3,716	I used the JP spring kits in two rifles, and they worked as advertised. The factory triggers were heavy, gritty, and negatively affected my ability to shoot well. After $15 and 15 min of work I had acceptable triggers. Not great, but certainly acceptable. __________________ You are the bows from which your children as living arrows are sent forth.

July 31, 2020, 04:35 PM	#3
Kreyzhorse Senior Member Join Date: April 12, 2006 Location: NKY Posts: 12,463	I like PSA stuff, but their mil spec triggers, and every other mil spec trigger I've felt has room for improvement. Sounds like a pretty quick and easy improvement without spending a ton of money on an after market drop in trigger. __________________ "He who laughs last, laughs dead." Homer Simpson

May 6, 2021, 10:52 AM	#4
Shadow9mm Senior Member Join Date: March 21, 2012 Location: Indianapolis, IN Posts: 3,969	Just installed another JP Enhanced reliability spring kits in a co-workers rifle. Took it from about 6.9lb down to 4.9lb, a nice predictable 2lb reduction. Still cant say enough good about the kit. At $11 its still the best bang for the buck trigger job for an AR IMHO. __________________ I don't believe in "range fodder" that is why I reload.

May 15, 2021, 08:47 AM	#5
Joe-ker Senior Member Join Date: September 6, 2016 Location: North Iowa Posts: 247	Thanks. I think I will try. At 11$ it’s hard to go wrong. I did see a comment that in cold temps one guy had too light of primer strikes. __________________ From my cold dead hands.....

May 15, 2021, 09:29 AM	#6
MarkCO Senior Member Join Date: October 21, 1998 Location: Colorado, USA Posts: 4,307	Maybe with CCI 41s, but with standard primers, I have never seen an issue with the JP kit. Both of my "mil-spec" triggers have the JP spring kit in them. __________________ Good Shooting, MarkCO www.CarbonArms.us

May 15, 2021, 01:48 PM	#7
Geezerbiker Senior Member Join Date: March 20, 2011 Location: Willamina, OR Posts: 1,908	I'm still working on my first AR and it's far from done... Anyway I got the lower receiver kit from Midway. The trigger was heavy and gritty. So I do what I always do in that situation and that was to polish the mating surfaces with a very fine knife sharpening stone. I'm now aware that I may have removed the surface hardening but I couldn't have take more than .001" inch off the trigger and sear. Right now the trigger is around 4 pounds and is smooth and crisp. It remains to be seen if I F'ed it up or not... Tony

May 15, 2021, 04:08 PM	#8
MarkCO Senior Member Join Date: October 21, 1998 Location: Colorado, USA Posts: 4,307	Tony, just keep an eye on it. It might be fine, might have gone too far. 1000 rounds will let you know. __________________ Good Shooting, MarkCO www.CarbonArms.us

May 15, 2021, 08:45 PM	#10
Geezerbiker Senior Member Join Date: March 20, 2011 Location: Willamina, OR Posts: 1,908	I've been very successful or maybe just lucky but I always seem to make the trigger a little better. My first trigger job was on my T99 Arisaka. At the time it was my only center fire rifle and the trigger was heavy and gritty. It's still a bit heavy but now it's way smoother. I was only after better not a perfect trigger pull and I was thrilled with the results. Tony