Offered by NoKick.com, the M-4 Carbine/AR-15 Carbine Extra Power Buffer Spring (Recoil Spring) by Sprinco is a great way to increase reliability and extend the service life of your firearm. This product has been tested to over 100,000 rounds with no loss of performance - WOW! It was designed to work in any AR-15 or M-4 .223/5.56mm type rifle with a collapsible butt stock configuration. Also very useful with larger cartridges used in the AR-15 platform such as 6.8 SPC, 6.5 Grendel, .30 Rem AR, 7.62x39, .458 SOCOM, .50 Beowulf, .450 Bushmaster, etc.
Other key features:
Highest Quality Chrome Silicon Spring available
Extremely long service life with no degredation in performance
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