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JPS3.5T Spring Kit
JPS3.5T Spring Kit
JPS4.0 Spring Kit
JPS3.5T Spring Kit
JPS3.5T Spring Kit
JPS4.0 Spring Kit
None
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J P ENTERPRISES - AR-15 SPRING SETS

19 Reviews
Model Number
Brownells #
452000104, 452000105
MFR #
JPS3.5T, JPS4.0
UPC
812872022154, 812872022161
$10.40
Coupon Code
Purchase Limit Help

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What is the J P ENTERPRISES - AR-15 SPRING SETS?

JPS3.5T produces 3.5 to 4 lb. trigger pull with JP Fire Control parts. This kit is intended for use with JP trigger parts and will not necessarily yield substantial change on standard AR-15 trigger components. Application: Use of this spring kit allows for use of ammunition with low-sensitivity primers such as those found in NATO-spec and various foreign-manufactured ammunitions, but in the case of large-frame ARs and duty/defense rifles, domestic-manufactured ammo is strongly recommended to ensure 100% ignition reliability. The JPS4.0 Tactical Spring kit will yield a 4.0-4.5 lb. trigger pull with JP Fire Control parts. This kit is intended for use with JP trigger parts and will not necessarily yield substantial change on standard AR-15 trigger components produces a 4 to 4.5 lb. trigger pull.


SPECS: Spring steel. Kit includes red-coded hammer spring, yellow-coded trigger return spring, and disconnector spring. For use on AR-style .308 rifles; not for defense or duty applications.


See all of our AR15s and AR15 parts here.

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AR-15 SPRING SETS REVIEWS

4.8
19 Reviews
5 Stars
89%
4 Stars
5%
3 Stars
0%
2 Stars
5%
1 Stars
0%
Reviews Summary
The AR-15 Spring Sets receive high praise for their performance, transforming heavy factory triggers into significantly lighter pulls. Most users report improved accuracy and smoother operation at a budget-friendly price. However, some reviews caution that stock triggers may not benefit as much, and users should be aware of potential reliability issues with lighter pulls depending on ammunition used.
What Reviewers Are Saying
Performance Improvement
80%
Many reviewers highlight the significant enhancement in trigger pull weight and overall performance when using the AR-15 Spring Sets, often comparing the results favorably against higher-end replacements, particularly stating smoother and crisper pulls. This theme is prominent as many experienced a reduction in trigger weight from heavy factory settings to lighter, manageable pulls.
Installation Ease
70%
Several users commend the straightforward installation process of the springs, noting that with moderate effort and basic tools, they can easily improve their triggers. This simplicity contributes positively to the overall user experience, making it an accessible upgrade for most AR-15 owners.
Value for Money
85%
Reviewers consistently mention the affordability of the spring sets, often emphasizing that for approximately $10, the enhancements provided are well worth it compared to the cost of full trigger replacement systems. This theme underscores the product as a cost-effective option for those looking to upgrade their setups without breaking the bank.
Potential Reliability Concerns
30%
A few reviews voice caution regarding the use of lighter trigger pulls with specific ammunition types, as some users reported misfires with lower quality rounds. This theme highlights the need for users to consider their ammunition choices and shooting conditions when making modifications to trigger weights, particularly for tactical or defensive purposes.
Compatibility Issues
25%
Some feedback indicates that the springs may not provide expected performance improvements when installed with stock mil-spec triggers. This suggests that while many users see improved results, others might experience disappointment if they have certain trigger setups. This theme is essential for setting realistic expectations for potential buyers.
5
AR-15 SPRING SETS
Work very well. Once installed you will notice the difference and wish you had bought this sooner.
Would you recommend this? Yes, I would recommend to a friend
by DENNIS DUNNE on August 25, 2025
Verified Purchase
Was this review helpful? 3
5
Wolf cub
These springs work great, now that I know who has these, as the need arises I will buy more and I highly recommend these
Would you recommend this? Yes, I would recommend to a friend
by ROBERT BUHL on February 22, 2025
Verified Purchase
Was this review helpful? 3
5
It makes a difference
3.5 lb spring replaced the Daniel Defense factory trigger spring ... easy to change out. Much lighter pull. & it made a difference for me at the range.
by THOMAS WOOD on May 15, 2024
Verified Purchase
Was this review helpful? 3
5
Great upgrade
The spring set turned a regular trigger / hammer Into something that feels like $100 trigger. Of course there was some polishing involved but still.
by THOMAS WALDEN on April 06, 2024
Verified Purchase
Was this review helpful? 3
5
lighter trigger
yes lighter trigger, easy to install. worth the $$$$$$$
by RICHARD STONE on March 21, 2024
Verified Purchase
Was this review helpful? 2
View All 19 Reviews
Customer Questions
4 Questions