Strike Industries Ar Carbine Flat Wire Spring

Strike Industries Ar Carbine Flat Wire Spring - Buffer Spring for AR-15 - view 1
Strike Industries Ar Carbine Flat Wire Spring - Buffer Spring for AR-15 - view 2
Strike Industries Ar Carbine Flat Wire Spring - Buffer Spring for AR-15 - view 3
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Strike Industries

Overview

The Strike Industries AR Carbine Flat Wire Spring is designed specifically for AR-15 and AR-10 platforms, providing reliable performance in a carbine-length configuration. The flat wire construction enhances durability and reduces the risk of coil binding, which can improve the overall function of your firearm. This spring is often found in builds featuring a mid-length gas system and 5.56 NATO caliber, making it a solid choice for builders focused on reliability and performance in their setups.

Specifications

MPNSI-AR-FWS-C
LengthCarbine
Spring TypeFlat Wire
PlatformAR-15/AR-10

Available Merchants(5)

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KY Gun Company logo
KY Gun Company
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$20
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Brownells
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$22
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Optics Planet
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$22
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Primary Arms
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AT3 Tactical
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Frequently Built With

Based on build data

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

78.9%
AR-1578.9%
AR-1021.1%

Caliber

69.2%
5.56 NATO69.2%
.223 Wylde15.4%
.458 SOCOM7.7%
6mm ARC7.7%

Gas System

45.5%
Mid-Length45.5%
Carbine36.4%
Rifle18.2%
Frequently Built With Products
ProductCategoryTimes Built Together
Strike Industries Extended Bolt Catch31
Fortis Lightweight Enhanced AR-15 End Plate, Gold - LE-BLK-K1-GOLD30
Strike Industries Ambidextrous Magazine Release, Black - ARAMBIMRBK26
Phase 5 Tactical Ar-15 90 Degree Ambi Safety Selector Black26
Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension26
Strike Industries Cobra Billet Aluminum Trigger Guard - Red25
Build Platform Breakdown
PlatformPercentage
AR-1578.9%
AR-1021.1%
Build Caliber Breakdown
CaliberPercentage
5.56 NATO69.2%
.223 Wylde15.4%
.458 SOCOM7.7%
6mm ARC7.7%
Build Gas System Breakdown
Gas SystemPercentage
Mid-Length45.5%
Carbine36.4%
Rifle18.2%

Builds Featuring This Part

See all 14

Builds in the community that include the Strike Industries Ar Carbine Flat Wire Spring

BuildPartsTotal
new 5.56 build
27$1867.99
18" build
26$1801.49
LMT 18" .223 Wylde
30$7953.79
PSA 12.5" 5.56
24$939.64
11.5" Aero Precision pistol
16$1970.62
sharps bros 18" 5.56
19$2806.84
18" sharps bros build
22$3259.34
first 5.56 build
26$1774.29
brownells 10.5" 5.56
24$544.30
16" PSA clone
27$1324.13
16" aero precision SBR
27$1723.27
Latest 5.56 build
30$2926.58

Customer reviews

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1 global rating

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Top reviews

C
ch3mp3l
SI flat wire spring quieter
Reviewed on April 25, 2026Verified with Build

Strike Industries flat wire carbine buffer spring is a quality of life upgrade over a music wire spring. Much quieter cycle through the stock. Cycles cleanly on a 16 inch carbine. Dimensions match milspec carbine springs.

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