JP Enterprises AR-15 Enhanced Ignition Reliability Spring Kit with Red Hammer Spring

Manufactured by JP Enterprises
Manufactured by JP Enterprises
45 Reviews

In Stock

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The JP Enterprises AR-15 Enhanced Ignition Reliability Spring Kit with Red Hammer Spring is a must-have for any AR-15 enthusiast. This kit is designed to enhance the reliability and performance of your AR-15, ensuring that it fires smoothly and accurately every time. The kit includes a red hammer spring, which provides a crisp, clean trigger pull, and a set of enhanced ignition reliability springs, which improve the ignition system's performance. The JP Enterprises AR-15 Enhanced Ignition Reliability Spring Kit is made from high-quality materials and is designed to withstand the rigors of heavy use. The kit is easy to install and comes with detailed instructions, making it an ideal choice for both novice and experienced AR-15 users. 

  • Enhances reliability and performance of AR-15
  • Red hammer spring provides crisp, clean trigger pull
  • Enhanced ignition reliability springs improve ignition system performance
  • Made from high-quality materials
  • Easy to install with detailed instructions included

Overall, the JP Enterprises AR-15 Enhanced Ignition Reliability Spring Kit with Red Hammer Spring is an excellent investment for anyone who wants to improve the reliability and performance of their AR-15. With its high-quality construction and easy installation, this kit is sure to provide years of reliable service.
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BrandJP Enterprises
ManufacturerJP Enterprises
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

45 reviews


so far so good


This jp 3.5t spring i get just under 5lbs which is not really bad compare to my colt. I went target shooting yesterday and i used 3 different ammos the winchester, american eagle and tula. All of them went bang without single problem. I recommend this spring to anyone

Good Investment


Added these to my ACT ALG trigger and they made it even more enjoyable to shoot. Makes for a good combination. I will be adding more of these to some of my other FCGs. Shipping was very prompt as usual.

Recent Purchase


Another outstanding experience dealing with PA! I will continue to use your company as long as ya'll continue to offer such outstanding service .

JP Enterprises AR-15 Enhanced ignition reliability


Excellent upgrade for stock trigger. Polished up the parts and installed the springs. Smoother pull. Plus super fast shipping .

fast ship


Have not installed as yet. Primary gets your items to you Quick, Quick! In this age of if'y this or if'y that, I am telling you, Go with Primary Arms!



Huge step up from milspec

So far so good


I changed out the JP Reduced Power Spring kit (JPS3.5) to the JP Reliability Enhanced Spring kit (JPS3.5T) because I experienced a lot of light primer strikes with the JPS3.5 version with my AR15. Now that I replaced the spring kit with the JPS3.5T, I haven't experienced any light primer strikes with the recent change, thus far. The trigger feels real smooth. I would recommend this product.

Good product


I installed these springs with my ALG Defense ACT trigger kit. The result is a very crisp 4.5 pound trigger pull. I haven't had any light primer strikes as of yet. For the money you can't go wrong with these springs.

Great Springs


I love them, helped reduce pull weight as promised.Super fast shipping.Look forward to a long relationship with Primary Arms

Primary Arms is the bees knees


I recently ordered a bunch of parts to finish off my first AR build. Primary Arms sent me all of my products within 3 or 4 days of ordering. I even asked for some stickers to "decorate" my gun case and they sent a variety to help lol. Definitely recommend to everyone I know. Awesome company.