The Strike Industries Flat Wire Buffer Spring for AR-10/SR25, Chrome-Silicon Steel is a buffer tube compatible with Standard AR-10/SR25.
The SI Flatwire Spring for is an economical, easy upgrade to any .308 AR system. The flatwire spring increases service life of the platform, smooths out the shooting cycle, and greatly outlasts the stock spring. Increased bolt load, in addition to decreased compressing force increases reliability in cycling.
The buffer tube (receiver extension), buffer and spring control how an AR-15 cycles and also carry the stock. Check the tube diameter (mil-spec or commercial) and length against your stock and rifle before ordering.
How It Compares
Also compare the Ultra Light Takedown Pins for AR-15, Magwell for GLOCK 19/23 Gen 3, Polymer Construction and Advanced Receiver Extension for AR Rifles. Browse all AR-15 Parts and the full Strike Industries range. New to this? Read our guide: AR-15 Upgrades: Charging Handles, Safeties, Buffers and Muzzle Devices.
Ideal For
- Standard AR-10 and SR25 rifles needing a 19.5 in flat wire buffer spring
- Owners of .308 AR systems wanting longer service life and a smoother cycle
- Replacing a worn stock spring with cryo-cycled chrome-silicon steel
- Any standard AR10/SR25 receiver extension length
Key Features
- Flat Wire Design
- Compatible with All Standard AR10/SR25 Receiver Extension Lengths
- 19.5" Long
- Cryo-Cycled Chrome-Silicon Steel
- Buffer Spring
- Compatible with Standard AR-10/SR25
- Chrome-Silicon Steel
Compatibility & Fitment
Compatible with Standard AR-10/SR25. Not sure it fits? Contact us before you order and we will check for you.
Technical Specifications
Brand | Strike Industries |
Type | Buffer Tube |
Model | Flat Wire Spring |
Description | Advanced Receiver Extension |
Platform | AR-10 |
Color | Silver |
MPN | SI-AR10-FWS |
UPC | 708747545791 |
US Shipping & Support
Genuine Strike Industries, brand new and covered by the manufacturer's warranty. Shipping is free on US orders of $99 or more, and smaller orders ship from $6.95. Questions about fit, mounting or which option suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What does the Flat Wire Spring fit?
Compatible with Standard AR-10/SR25.
Is this a genuine Strike Industries product?
Yes. It is a new, genuine Strike Industries product sourced through an authorized US distributor.
How much is shipping?
Shipping is free on US orders of $99 or more. Orders under $99 ship at a flat rate from $6.95 to $9.95, depending on the order total.
