The SI Flatwire Spring for is an economical, easy upgrade to any .308 AR 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 compressing force increases reliability in cycling. Specifications for Strike Industries AR-10 Flat Wire Spring: Manufacturer: Strike Industries Color: Black Finish: Chrome-Silicon Fabric/Material: Cryo-cycled Steel Gun Model: AR-10 Condition: New Features of Strike Industries AR-10 Flat Wire Spring Cryocycled chromesilicon steel for strength, reliability and longevity Decreased harmonics lessens system vibration for faster follow up shots. No more AR twang Compatible with all standard AR10/SR25 receiver extension lengths Package Contents: Strike Industries AR-10 Flat Wire Spring
6 reviews for Strike Industries AR-10 Flat Wire Spring
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Jackson –
Great spring and very quiet, no more AR "thwang" after every shot. Longer than expected and a little bit harder to install, but excellent all the same
David –
Works great in my PSA AR10. Cheapest place online to buy it. The flatwire compresses more than the stock spring and allows for better force to feed. Not sure I can tell a difference in sound as claimed.
Wyatt –
Replaced a standard carbine spring, at first glance I didn’t think it would fit in a 6in buffer tube sb tac pdw on a 308 win. It does and it greatly helped reduce felt recoil. Difference was night and day and I will be ordering a second.
Jack –
I haven't built my 308 lower yet, but I put one of these in both my 5.56 & 300BLK. I wasn't really having any cycling issues with either of them, but these springs are a nice cheap upgrade. Going semi-budget with this build, but this part is no brainer. Well worth the few extra buck over mil spec. The spring does sound different, too.
JoePa –
I ordered this due to cycling issues on my Aero M5 build. Turned out I needed to open up the gas port on the barrel. Generally 308 ARs are overgassed, not undergassed. This model seems too long for either carbine or rifle length tube. Again it works, but I ended up trimming a couple inches off to make it easier to put in my carbine length tube. My rifle cycles flawlessly.
Concours14 –
I’ve used several of these springs in different AR’s I’ve built. They’ve always worked great and reliably. I actually installed this latest one in an AR-15 9 mm pistol I built. I can’t say yet how well it works or if it will be too stiff for a 9 mm application but many people say that it’s best to use an AR-10 buffer spring in a 9 mm build, so I’ll have to see if it functions properly. I’m using a 6.5 oz. Buffer so I wanted a stiffer spring in it since I already had the buffer from another build.