Strike Industries Flat Wire Spring .308 Win AR-10 – Silver Stainless Steel – AR10FWS (UPC: 708747545791)
Upgrade your AR-10 / .308 rifle with the Strike Industries Flat Wire Spring 308 Win AR-10 Silver Stainless Steel AR10FWS and experience smoother cycling, improved reliability, and dramatically longer spring life. Designed as a direct replacement for standard AR-10, LR-308, and SR-25 buffer springs, this precision flat wire spring is an easy, affordable performance upgrade for any .308 AR build. Strike Industries+2Palmetto State Armory+2
High-Performance Flat Wire Spring for .308 AR Platforms
The Strike Industries AR10FWS Flat Wire Spring is engineered specifically for .308 AR systems using a standard rifle or carbine receiver extension. Its flat wire design increases the contact surface and energy storage while maintaining controlled compression and return, which helps: Strike Industries+2Hunter Select USA+2
Increase service life of your entire platform
Smooth out the recoil and shooting cycle
Greatly outlast standard round-wire buffer springs
Enhance cycling reliability with increased bolt load and reduced compressing force
If you’re running a large-frame AR for precision shooting, hunting, or tactical use, this spring is built to keep your rifle running smoother, longer.
Stainless Steel Construction & Cryogenic Treatment
Unlike basic OEM springs, the AR10FWS is built from high-quality stainless spring steel (commonly referenced by vendors as 17-7 stainless or cryo-treated steel), offering outstanding corrosion resistance and durability in real-world conditions. Classic Firearms+2KYGUNCO+2
Key construction advantages:
Stainless-steel flat wire resists rust and corrosion better than many standard carbon-steel springs
Cryogenic cycling / stress relief for greater consistency, longer service life, and improved resilience under high cyclic rates Palmetto State Armory+2AR15Discounts+2
Maintains tension and performance through thousands of rounds
This makes the Strike Industries flat wire buffer spring especially well-suited for rifles that see harsh environments, high round counts, or long-term storage.
Smoother, Quieter Shooting – Less “AR Twang”
One of the standout benefits of the Strike Flat Wire Spring 308 Win AR-10 is how it reduces system vibration and the classic buffer spring “twang” associated with many AR platforms. Primary Arms+2Hunter Select USA+2
With this spring installed, shooters typically notice:
Reduced harmonics and less distracting noise during cycling
A smoother recoil impulse, helping you stay on target
Faster, more controlled follow-up shots
Whether you’re ringing steel at distance or running drills at close range, the improved feel of the action is immediately noticeable.
Enhanced Reliability Through Optimized Bolt Load
The Strike Industries AR10FWS is specifically tuned to provide increased bolt load while requiring less compressing force, a combination that can significantly boost reliability. Strike Industries+2Palmetto State Armory+2
Practical benefits include:
More consistent bolt lock-up and cycling, especially in dirty or adverse conditions
Improved performance with a wider range of ammo loads
Better function in rifles tuned with adjustable gas blocks or suppressors
This makes the AR10FWS a smart upgrade for duty rifles, competition builds, and precision rigs where consistent function is non-negotiable.
Compatible with AR-10, LR-308 & SR-25 Platforms
The Strike Industries Flat Wire Spring 308 Win AR-10 is designed as a drop-in replacement for standard buffer springs used in: Wing Tactical+2Primary Arms+2
AR-10 pattern rifles
LR-308 platforms
SR-25 style rifles
It’s compatible with all standard AR-10 / SR-25 receiver extension lengths, making it an extremely versatile upgrade for most large-frame AR builds that use .308 / 7.62 NATO. Primary Arms+1
Always confirm your rifle’s receiver extension and buffer system specs before installation to ensure proper fit.
Easy, DIY-Friendly Installation
One of the biggest advantages of the Strike AR10FWS Flat Wire Spring is how simple it is to install. For most shooters with basic AR maintenance experience, it’s a quick, tool-light upgrade: Wing Tactical+1
Ensure the rifle is unloaded and safe.
Remove the stock or brace and access the buffer and spring in the receiver extension.
Replace the existing round-wire buffer spring with the Strike Industries flat wire spring.
Reinstall the buffer, stock/brace, and perform a function check.
No permanent modifications or gunsmithing are typically required—just a straightforward swap that can be done in minutes.
Ideal for Multiple Shooting Applications
This stainless flat wire buffer spring is an excellent upgrade for:
Precision long-range AR-10 rifles where consistent cycling and smooth recoil are critical
Competition and 3-gun builds needing fast follow-up shots and reduced vibration
Hunting rifles that must run reliably in extreme temperatures and weather conditions
Tactical or duty-style .308 ARs where reliability under heavy use matters
High-round-count training rifles where extended spring life saves money and downtime over time Primary Arms+1
If your large-frame AR is built for serious work—or serious fun—this spring helps it run at its best.
Key Specifications – Strike Industries AR10FWS Flat Wire Spring
From the manufacturer and major retailers, typical specs for the Strike Flat Wire Spring 308 Win AR-10 Silver Stainless Steel AR10FWS include: Strike Industries+2Palmetto State Armory+2
Manufacturer: Strike Industries
Model: Flat Wire Spring – AR-10 / .308 caliber
Part Number: AR10FWS / SI-AR10-FWS
UPC: 708747545791 Brownells+2JSE Surplus+2
Caliber / Platform: .308 Win / 7.62 NATO AR-10, LR-308, SR-25
Material: Stainless spring steel flat wire (cryo-cycled / stress-relieved) Palmetto State Armory+2Primary Arms+2
Outside Diameter (OD): approx. 0.94"
Inside Diameter (ID): approx. 0.75"
Length: approx. 19.5"
Revolutions (coils): approx. 42
Wire Gauge (flat profile): ~0.045" x 0.0935"
Weight: approx. 2–3 oz net Strike Industries
These dimensions make it a true, ready-to-use replacement for standard .308 AR buffer springs while delivering all the benefits of a modern flat wire design.
Why Choose the Strike Industries Flat Wire Spring for Your .308 AR?
Summing it up, the Strike Industries Flat Wire Spring 308 Win AR-10 Silver Stainless Steel AR10FWS offers:
Longer service life than typical OEM round-wire springs
Smoother recoil and cycling for better control and comfort
Increased bolt load & reduced compressing force for more reliable operation
Corrosion-resistant stainless construction ideal for tough environments
Compatibility with AR-10 / LR-308 / SR-25 platforms using standard receiver extensions
Easy, DIY installation with no permanent modifications
For the cost of a single small part, you can significantly upgrade how your .308 AR feels, functions, and holds up over time. If you’re building, tuning, or refreshing a large-frame AR, the Strike Industries AR10FWS Flat Wire Spring deserves a spot high on your parts list.
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