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
- OD: 0.94"
- ID: 0.75"
- Length: 13 7/8"
- Rev: 35
- Gauge (Flat Wire Profile): 0.045" x 0.0935"
- 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"
Please note: If the listing says "In-Stock" it means we have all of the items in stock. Please check this LINK to view our most up to date shipping status.
Warranty, Returns & Terms:
Davidson Defense Store offers a 30 day return, refund and exchange policy. You must email or call Davidson Defense Store and obtain an RMA number prior to any return, refund, or exchange. All returns must include the original order number, receipt or invoice, along with the billing address, shipping address, contact phone numbers, contact emails, and RMA number. Returns, refunds, and exchanges may take up to two weeks, not including transit times, for processing after we receive it. Return shipping costs will be the responsibility of the returning party, with the exception of the wrong item being received or on warranty exchange during the first 30 days after delivery. Items returned for warranty will only be replaced or exchanged, not refunded.