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Reviews & Ratings for Strike Industries AR Carbine Flat Wire Spring — 80 reviews

(80 reviews)
Strike Industries AR Carbine Flat Wire Spring
Strike Industries AR Carbine Flat Wire Spring
$23.95 $19.19 Save 20%
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Most Helpful Positive Review Much better than music wire spring, not as good as Tubbs
A lot of people think they'll get a precision spring at budget prices, but you can't have your cake and eat it too. This spring IS much, much better than a stock GI spring in both function and durability. It will last much longer, it'll also reduce the harmonic clash which causes your brass to eject...
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Most Helpful Negative Review Maybe its just me.
This review by no means reflects optics planet, and this is purely a personal opinion. I purchased this product for a lightweight AR build after reading positive sound reduction reviews. Initial thoughts after inspecting this flat-wire buffer spring next to a standard buffer spring; about 3-4 inches...
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Same good old flat spring..

by Bla, Verified Owner from FL, United States Written on March 6, 2026
Good flat spring that brings some good tension and smoother operation. I already have one from years ago still working on a short AR. My gripe with this new purchase is the packaging, SI used to use a straight, clear plastic container to keep the spring upright and now they just jammed the spring in a plastic bag. Talk about cheap out.
Would recommend: Yes
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Strike Industries AR Carbine Flat Wire Spring

by GreenLight, Verified Owner from CO, United States Written on February 8, 2026
I initially purchased this flat wire spring for an AR9 SBR build. I was trying it for the "blowback9" gentle recoil system. Its ID is too small and binds on the hydraulic buffer. I put it in a standard buffer system, and it works as advertised. So, if you are trying to get the flat wire buffer spring for the GRS this will not work. Also, it is more difficult to install and remove from buffer tube. It does not slip over the buffer retaining pin like a round wire spring.
Pros:
  • Quiet
Cons:
  • Hard to install and remove
Best Used for:
  • standard buffer setups
Would recommend: Yes
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Flat wire spring

by GreenLight, Verified Owner from CO, United States Written on January 21, 2026
Put this buffer spring in an AR9 (SBR) build with a DTT FTR. Flat wire spring was recommended as part of the “Gentle Recoil System”. Ran flawlessly.
Pros:
  • Runs quieter than a traditional spring.
Cons:
  • Tight fit over my Kynshot hydraulic buffer. Not as easy to install or remove past the buffer retainer pin.
Best Used for:
  • Getting rid of the spring noise in buffer tube.
Would recommend: Yes
1 of 1 found the following review helpful.
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AR Carbine Flat Wire Spring

by Charlie, Verified Owner from TN, United States Written on January 7, 2026
I paired this with a H2 buffer in a PSA AR. Smooth cycling and less spring noise. 100 rounds with no issues. Note the flat spring will be longer than your stock round spring.
Would recommend: Yes
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I love mine

by Josiah fisher, Verified Owner from NC, United States Written on December 21, 2025
This recall spring makes a massive difference in shooting I don't care about the noise maybe you will so that's something to consider at least but yeah I would highly recommend this and I'm probably going to buy another one
Would recommend: Yes
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A buffer spring is a buffer spring

by HC, Verified Owner from TX, United States Written on December 18, 2025
I just copied my review for the pistol version. Basically the same. Misled from all the 5 star heavy reviews. Recoil, sounds, all feels the same as the stock round wire spring. I wasted my money, but at least it wasn't too much. A buffer spring is a buffer spring when used in a naturally hard kicking 5.56 rifle, at least in my experience. What's more, a flat spring is slightly harder to remove and install because it gets caught on the retainer pin.
Pros:
  • None really
Cons:
  • Overpriced spring
Would recommend: No
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Great purchase!

by Pat, Verified Owner from FL, United States Written on November 26, 2025
Does exactly what i need it to do. Runs smooth and no "twang"!
Would recommend: Yes
0 of 1 found the following review helpful.
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SI Carbine Flat Wire Spring

by CG, Verified Owner from PA, United States Written on November 16, 2025
Fit well with a new Spikes t2 buffer in my M&P15. Smooth operation so far!
Would recommend: Yes
0 of 1 found the following review helpful.
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Very good spring

by Cj, Verified Owner from VA, United States Written on November 11, 2025
Got here fast and works as intended!!! I definitely would recommend this to anyone tryna build a good ar build
Would recommend: Yes
0 of 1 found the following review helpful.
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flat spring no boing

by Arsaregood, Verified Owner from AL, United States Written on November 1, 2025
Spring is heavier and doesn’t create that trampoline spring sound like a stock carbine does. If you’re running a select fire, FRT, or Super Safety I highly recommend this spring for your rifle or pistol to aid in the increased fire rate. I’ve gone through 6k rounds with it so far and no evidence of it failing so far. There is no need to purchase the other flat springs that are 5&6 times more expensive to get the same outcome. Unless you have money to waste. ������
Would recommend: Yes
0 of 1 found the following review helpful.
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