The SI Carbine Flat Wire Spring is an economical and easy upgrade to any AR system with a carbine buffer 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 compression force increases reliability in cycling.
Additionally, all SI Flat Wire springs are cryogenically stress relieved 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.
They are much quieter, ultra high-polished and designed to run smoother and quieter. They also hold their original spring tension during extended firing under high heat and cold. Some springs weaken significantly during extended firing; however, the flat wire spring is both cryo treated plus designed to retain its spring tension well beyond the failure point of standard military springs.
Upgrade your gun. Get a flat wire spring today to reduce the twang and increase the reliability!
1x Carbine Length Flat Wire Spring (Fits AR-10 LR308 only)
1x Flatwire Spring for AR10/SR25/LR308
Materials: 17-7 ph, heat and cryo treated
Gauge (flat wire profile): 0.045" x 0.0935"
Weight: 3oz gross,2oz net
Cryo-cycled 17-7 ph steel for strength, reliability and longevity
Decreased harmonics lessens system vibration for faster follow up shots.
Increased bolt load for more positive feeding
Reduces distracting AR "twang"