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Strike Industries
Overview
The Strike Industries Flat Wire Buffer Spring is designed for those looking to enhance the performance of their AR-15 builds. With a length of 10 inches, this flat wire spring offers a unique design that can improve reliability and reduce wear over time compared to traditional round wire springs. It’s particularly well-suited for mid-length gas systems and is commonly found in builds chambered in 5.56 NATO, ensuring optimal cycling and function.
Strike Industries Flat Wire Spring, 10" L X 0.75" ID X 0.94" OD - AR-FWS-P
Strike Industries Flat Wire Spring, 10" L X 0.75" ID X 0.94" OD - AR-FWS-P was the second most added buffer spring on GunPartPicker in August 2026, behind the Strike Industries Flat Wire Spring for AR Carbine - AR-FWS-C, with about 12% of all buffer springs added to builds. Up from #3 in July. Builds with this buffer spring are split between 5.56 NATO (57%) and 300 Blackout (17%), split between pistol-length (38%) and rifle-length (25%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 5 of the 6 retailers we track have it in stock. Prices barely moved in August 2026, holding around $14.95, so there haven't been real sales lately. Buying today, the lowest price is $14.95 at Classic Firearms, 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 217 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, 10" L x 0.75" ID x 0.94" OD - AR-FWS-P
| Build | Parts | Total |
|---|---|---|
 | 23 | $2733.07 |
 | 31 | $7458.30 |
 | 29 | $3666.04 |
 | 24 | $1164.21 |
 | 30 | $3836.02 |
 | 22 | $2421.93 |
 | 23 | $1784.66 |
 | 26 | $2802.22 |
 | 20 | $996.82 |
 | 26 | $2655.50 |
 | 25 | $2213.03 |
1 global rating
Top reviews
Strike Industries flat wire buffer spring is meaningfully quieter than a standard round wire spring, no twang you can feel through the stock. Cycles smoothly on a 16 inch carbine. Length and free standing dimensions match milspec carbine springs. Solid upgrade.
