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Strike Industries
Overview
The Strike Industries Flat Wire Spring for AR Carbine is designed specifically for AR-15 and AR-10 platforms, providing a reliable and consistent performance with its flat wire design. This carbine-length spring enhances the cycling efficiency of your firearm, which can lead to reduced friction and improved reliability over time. This spring is frequently found in builds utilizing a mid-length gas system chambered in 5.56 NATO, making it a solid choice for those configurations.
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Strike Industries Flat Wire Spring for AR Carbine - AR-FWS-C was the most added buffer spring on GunPartPicker in August 2026, ahead of the Strike Industries Flat Wire Spring, 10" L X 0.75" ID X 0.94" OD - AR-FWS-P, with about 36% of all buffer springs added to builds. That's its 4th straight month at #1. Builds with this buffer spring are mostly chambered in 5.56 NATO (69%, then .223 Wylde 13%), split between mid-length (53%) and carbine-length (20%) gas systems, and mostly AR-15 (88%, then AR-10 11%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today all 3 retailers we track have it in stock. Prices barely moved in August 2026, holding around $19.95, so there haven't been real sales lately. Buying today, the lowest price is $19.95 at BattleHawk Armory, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every buffer spring by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Spring Guide →The part most often added in each category by the 969 builds that include this one
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Strike Industries Flat Wire Spring for AR Carbine - AR-FWS-C
| Build | Parts | Total |
|---|---|---|
 | 15 | $1263.07 |
 | 28 | $3665.40 |
 | 26 | $4662.41 |
 | 24 | $1249.59 |
 | 24 | $1689.06 |
 | 27 | $2301.70 |
 | 30 | $4530.23 |
 | 22 | $1011.53 |
 | 27 | $4253.00 |
 | 32 | $5937.97 |
 | 32 | $7261.07 |
 | 28 | $2656.56 |
4 global ratings
Top reviews
Strike Industries flat wire spring in carbine length drops into a milspec carbine tube without any modification. Less spring twang felt through the stock compared to round wire. Cycles cleanly. Solid quiet upgrade for carbine builds.
Strike Industries flat wire buffer spring in carbine length is meaningfully quieter than a music wire spring. Less spring twang felt through the stock. Cycles cleanly. Dimensions match milspec. Worth the upgrade for any carbine.
Strike Industries flat wire buffer spring is the upgrade I didnt know I needed. Cycle is quieter, no spring twang felt through the stock. Dimensions match milspec for any carbine extension. Drop in fitment. Worth the small upgrade cost.
flat wire spring for AR carbine, dropped right into a carbine extension with no fitting. impulse is quieter than a standard carbine spring, no spring twang. action feels smoother on charge stroke
