Strike AR10 Flat Wire Spring (.308 caliber)


1 in stock

SKU: SI-AR10-FWS Categories: , , , ,


The SI Flatwire Spring is an economical, and 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.  Additionally, all SI Flatwire springs are cryogenically cycled to provide greater consistency, longer spring life, and greater resilience to high cyclic rates.  At a cost not much greater than stock carbine springs, the SI Flatwire is an easy option for those either looking to replace worn buffer springs or begin new builds.

Package include:
– 1x Flatwire Spring for AR10/SR25/LR308

– Cryo-cycled chrome-silicon steel for strength, reliability and longevity
– Decreased harmonics lessens system vibration for faster follow up shots.
– No more AR “twang”
– Compatible with all standard AR10/SR25 receiver extension lengths

Product Specifications

OD: 0.94”

ID: 0.75”

Length: 19.5”

Rev: 42

Gauge (flat wire profile): 0.045” x 0.0935”

Weight: 3oz gross,2oz net

Package includes:

1x Flatwire Spring for AR10/SR25/LR308

Materials: 17-7 ph, heat and cryo treated

Additional information

Additional information

Weight 0.3 lbs
Dimensions 4 × 4 × 18 in


Strike Industries

Reviews (0)


There are no reviews yet.

Be the first to review “Strike AR10 Flat Wire Spring (.308 caliber)”

Your email address will not be published. Required fields are marked *

Shipping & Delivery

All shipping is calculated at checkout. You can choose between USPS and UPS for your shipping needs. All orders can be shipped at various speeds.

All ammo must ship via UPS