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Strike Industries SI-AR-FWS-C
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Strike Industries

$23.95
$21.95
Sale Price
Available California compliant

Strike Industries AR Carbine Flat Wire Spring SI-AR-FWS-C

Key Details
Brand Strike Industries
Manufacturer Part Number SI-AR-FWS-C
UPC 708747545555
SKU SI-AR-FWS-C
Current Stock 565 available
Quantity Updated Apr 24, 2026 1:00 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

The SI Carbine Flat Wire Spring is an affordable and simple upgrade for any AR system with a carbine buffer. The Flat Wire spring extends the service life of the platform, smooths the shooting cycle, and significantly outlasts the stock spring. Increased bolt load, along with decreased compression force, enhances cycling reliability. Additionally, all SI Flat Wire springs are cryogenically stress-relieved to ensure greater consistency, longer spring life, and better resilience to high cyclic rates. At a cost similar to stock carbine springs, the SI Flat Wire is a convenient choice for those replacing worn buffer springs or building new rifles.

Features
  • Cryo-cycled 17-7 ph steel for strength, reliability, and longevity
  • Decreased harmonics lessen system vibration for faster follow-up shots
  • Increased bolt load for more positive feeding
  • Reduces distracting AR twang""
Specifications
UPC: 708747545555
Manufacturer: Strike Industries
Manufacturer Part #: SI-AR-FWS-C
Type: Buffer Spring