JP Enterprises Reduced spring Kit AR

IIRC I got mine from Hical.ca

EDIT

srry it was wolf springs and they improved things considerably

hical.ca/wolff-ar-15-trigger-function-pak-reduced-power/
 
I've had the jp yellow spring with a Bill Springfield trigger in my favourite lower for 8 or 9 years and have gone through several different uppers and almost 10000 rounds with no problems. No issues with light strikes with Tula, wolf, privi, norinco, S&B, reloads, or American ammo.

That being said, my rifle is a range only gun and has never seen any hard use/is always clean.
 
I've had the jp yellow spring with a Bill Springfield trigger in my favourite lower for 8 or 9 years and have gone through several different uppers and almost 10000 rounds with no problems. No issues with light strikes with Tula, wolf, privi, norinco, S&B, reloads, or American ammo.

That being said, my rifle is a range only gun and has never seen any hard use/is always clean.

Whoopsie, sorry everybody - just realized I have the red springs, not the yellow springs.
 
Stopped dealing with J&P because of their smoke and mirror claims on their springs and other products. They also tend to use longer than stock springs of smaller wire diameter to increase strength because they are cheaper to form than shorter thicker wire ones...causes instability, bowing and drag in most cases. I often use a site called "wayback machine" and do a search on their products to find their original adverts and have been shocked to see how thick and deep they pile it on for their claims on some of their products. Not fun to have to pay $9 return shipping to get $9 worth of refund on something they deliberately mislabel. Decent marketers, lousy engineers IMHO.
 
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