AR-15 Carbine Flat Wire Spring

Name: AR-15 Carbine Flat Wire Spring
Brand: Strike Industries
Availability: InStock

Strike Industries · Buffer Tubes & Springs

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Best price

$21.95at Brownells

In stock checked Oct 1, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$21.95checked Oct 1, 2026	In stock	Buy at Brownells

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Lowest in-stock price in the last 30 days: $21.95 at Brownells. Dashed line = out of stock. Tracking since Sep 27, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Brownells	$21.95	$21.95	$21.95

Since Sep 27, 2026.

About this part

The AR-15 Carbine Flat Wire Spring is an AR-15 buffer part from Strike Industries. One store lists it, Brownells at $21.95. The lowest in-stock price in the last 30 days was $21.95 at Brownells.

Fits and works with

Buffer system: Carbine · Buffers and springs

Specifications

Manufacturer: Strike Industries
Platform: AR-15

From the manufacturer

The SI Carbine Flatwire Spring is an economical, 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 Flatwire 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.

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