Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Maxim Defense Industries JP Silent Captured Spring
As Low As $119.95 Save Up to 14%
View Product
Compare (0)
Most Helpful Positive Review JP silent capture spring
If u want a quiet MSR along with a smooth as silk action then this is what you want. Since I bought my 1st one 5 years ago, I have lost track of how many rifles I have with the JP spring. Every build has worked flawlessly and that smooth action still puts a smile on my face. You wont be disappointed...
Read More...
Most Helpful Negative Review Be careful which one you order
Product looked well built and others I have used functioned perfectly. Unfortunately, I accidentally ordered the CQB which did not fit in my carbine buffer tube. Double check that you are ordering the right unit
Show
Sort by
Filter by

Works perfectly, so far.

by sdo77, Verified Owner from MI, United States Written on May 17, 2025
Paired with an hbpdw brace and it works perfectly. I can't speak to longevity of the product as I only have a few hundred rounds using it.
Pros:
  • None
Cons:
  • A little pricy
Best Used for:
  • Shorty builds using hbpdw brace
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

Maxim JP Silent Spring, Exactly!

by Pat B, Verified Owner from MS, United States Written on March 28, 2025
I have several AR SPRs and pistols with Maxim Defense PDW/CQB setups, and I'm very pleased with their products, definitely first class! Until I started shooting suppressed, I hadn't noticed just how noisy the standard buffer and spring were. The MDI JP Captured Silent Spring really works. Same performance, quality, and reliability, but it's "quiet."
Would recommend: Yes
Was it helpful to you? Yes | No

awesome as usual

by Maxwell, Verified Owner from FL, United States Written on April 16, 2024
just the best. Popped it in a sugar weasel/badger with a q shorty stock and it changes the game. gun runs everything way better now and feels great regardless where the gas is set
Pros:
  • Everything
Cons:
  • i cant find one
Best Used for:
  • Every AR style rifle
Would recommend: Yes
Was it helpful to you? Yes | No

Great Buffer!

by AlwaysPlaid, from AZ, United States Written on January 29, 2024
Best buffer system for the Maxim Defense CQB stock. Best price for in stock I found. Fast shipping.
Would recommend: Yes
Was it helpful to you? Yes | No

JP Silent Captured Spings Rule - in all variations

by Graves, from NC, United States Written on June 7, 2023
The two best AR upgrades - a JP Silent Captured Spring and a Geissele Trigger. Glad Maxim Defense partnered up with JP on this. Super smooth action with excellent felt recoil reduction. Installation is straight-forward.
Pros:
  • smooth operation
Cons:
  • None
Best Used for:
  • Recoil Reduction
Would recommend: Yes
Was it helpful to you? Yes | No

Solves operating problems - smooth and quiet

by page71, Verified Owner from CA, United States Written on May 30, 2021
I was having some cycling issues with a traditional buffer and spring. This wasn't my first JP SCS system and I once again was not disappointed. Solved my problem and runs flawlessly. Much smoother and quieter operation as well. Very happy with JP's products, once again.
Pros:
  • function and design
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

JP SCS - The Fix

by Dusty Harry, from TX, United States Written on April 6, 2021
Was having short cycling issues with some subsonics in my 8" .300 BLK conversion on my Saint Edge AR Pistol; installed the JP Silent Captured Spring in my Maxim CQB - problem solved. Much smoother and quiter operation compared to the stock spring and buffer.
Pros:
  • Does what it says it will
Cons:
  • Pricey
Best Used for:
  • Anyone running a Maxim CQB
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

7-20 through 12-14 2019

by Censored, from AZ, United States Written on December 14, 2019
All sounded great so gave this a chance.It now lives on my MCR.milled a tiny bit off the top of the rods to accommodate the wider upper,and used the standard pdw mount with Maxim tube.charging handle and stock/brace rods function completely with this setup. heavy spring is chugging right along.and the brace work's just fine for the SBR barrels \m/ \m/
Pros:
  • I love it when a plan comes together
Cons:
  • Wasn't intended for my intentions
Would recommend: Yes
Was it helpful to you? Yes | No

Best deal ever

by Nobod, Verified Owner from GA, United States Written on September 7, 2018
This is going to replace my current but stock with Maxim Defense CQB buffer system. It is very impressive. This is not my first JP Silent Capture Spring. It works great in my 308 and AR-15. Loved the system so much I bought one for my son.
I will be putting this on my rifle later this week.
Would recommend: Yes
2 of 3 found the following review helpful.
Was it helpful to you? Yes | No

Smooth, Quiet, Allows Tuning

by Adam, from WI, United States Written on April 19, 2018
Significant noise reduction compared to standard spring/buffer. The completely customizable platform allowed me to tune a 300 blk pistol to perfection. Optional springs and weights a plus. Great quality product overall, fit and finish are excellent. Running this in a maxim brace. Will be buying these springs for all future builds. One thing to note when purchasing: there are models specifically made for Maxim's cqb brace/stock, and models for standard stocks. Same with spring kits.
Pros:
  • Quiet, customizable platform
Cons:
  • None
Best Used for:
  • Any build really. Fine tuning any platform.
Would recommend: Yes
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?