


Click to see full view
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
Prices checked
Strike Industries Flat Wire Spring, 10" L X 0.75" ID X 0.94" OD - AR-FWS-P is the second most added buffer spring on GunPartPicker so far in October 2026, behind the Strike Industries Flat Wire Spring for AR Carbine - AR-FWS-C, with about 13% of all buffer springs added to builds. That's its 3rd straight month at #2. Builds with this buffer spring are mostly chambered in 5.56 NATO (71%, then .223 Wylde 9%), split between mid-length (53%) and carbine-length (20%) gas systems, and mostly AR-15 (95%).
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 4 of the 6 retailers we track have it in stock. The best price crept up from $14.99 to $16.99 over September 2026. Buying today, the lowest price is $14.95 at Classic Firearms, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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 →Check it against the live catalog:
The part most often added in each category by hundreds of builds that include this one

Rise Armament Advanced Performance Trigger, Red - RA-535-RED-ARP

Rise Armament AR-15 Magazine Release Button - Rise Red

Strike Industries AR-15 Ambidextrous Safety Selector Switch - Red

Wilson Combat AR-15 Lower Receiver Forged

CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B

Strike Industries Extended Bolt Catch
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 | $2881.67 |
![]() | 31 | $7690.64 |
![]() | 29 | $3632.59 |
![]() | 24 | $1242.92 |
![]() | 30 | $4013.57 |
![]() | 22 | $2462.01 |
![]() | 23 | $1807.82 |
![]() | 26 | $2826.76 |
![]() | 20 | $1075.81 |
![]() | 26 | $2728.33 |
![]() | 25 | $2235.06 |
No reviews yet. Be the first to review this product!