• Cryo-cycled 17-7 ph steel for strength, reliability and longevity
  • Decreased harmonics lessens system vibration for faster follow up shots
  • Increased bolt load for more positive feeding
  • Reduces distracting AR "twang"


  • Material: Cryo-cycled 17-7 ph steel
  • Outer Diameter: 0.94"
  • Inside Diameter: 0.75"
  • Length: ~13.88"


  • Carbine buffer tubes
  • Pistol buffer tubes


Strike Industries Flat Wire Spring



There are a lot of parts that can be upgraded to improve performance or that might need replacing after you’ve used a rifle for a while. You might tinker with triggers and swap out safety selectors on a fairly regular basis, but how often does your buffer spring really cross your mind? It’s time it did. Strike Industries AR-15 flat wire buffer spring is the drop-in improvement you’ve overlooked for too long.

Flat Wire Buffer Spring by Strike Industries

AR-15 buffer springs tend to be something of a weak link in the weapon system. Over time the OEM springs weaken, and can fail, bringing the service life of your rifle to an abrupt end. Strike Industries’ AR-15 flat wire buffer spring is made from 17-7 steel that has been cryo-treated to last longer and perform more reliably than its predecessors.

The space between spring arcs is larger, and will not compress with use. You’ll enjoy more consistent performance, increased bolt load and much smoother cycle than with OEM springs. The flat wire buffer spring controls harmonics and vibration allowing the shooter to get follow-up shots off more quickly. Not only is AR “bounce” virtually eliminated, but the irritating “twang” so many shooters complain of is a thing of the past when you use this AR-15 buffer spring.

Strike Industries Flat Wire Buffer Spring Offers You More

Whether you’re building a new system or just looking to replace a worn AR-15 buffer spring, the Strike Industries Flat Wire AR Carbine Buffer Spring is the only buffer spring you need to consider for your standard length AR build. Not only does it outperform OEM springs, but it does it without breaking the bank.

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Reviews (35)

  • Cycles fine and locks open

    Posted by Jellen on 16th Jun 2022

    Spring has only major flaw: The inner diameter is too small and will not slip over the shoulder of the buffer. Cycles and locks open just fine but after 100 rounds it still would not slip over the shoulder. Twang noise is gone as advertised. Would not buy again.

  • Eliminates the twang and reduces recoil!

    Posted by Mark Massey on 12th Jan 2022

    I was very impressed with this flat wire buffer spring. my 1:8 twist upper was not locking to the rear after every mag I tried emptied. After some research the general suggestion was change the spring in buffer tube. That is exactly what I needed. Every Mag locked bolt to rear on empty, and the twang sound after each shot was eliminated. The recoil (which is minor to begin with) seems reduced when firing 75 and up grain rounds. Excellent product! Upgraded my LWRC as well with this spring.

  • Tight Fitment

    Posted by Rob on 19th Jun 2021

    The strike flat wire spring look good right out of the package but with the spikes t2 and other milspec buffers I used the spring doesn't go over the shoulder even when I installed it in the buffer tube. Strike says it will go over the buffer shoulder after ya fire a few rounds. Other flat wire springs I used go onto the buffer normally. Just didn't seem right with the spring not completely flush so I tried neverwear springs and fitted on normal.

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