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Product Description: Aero Precision APRH100133C: M5 .308 carbine buffer spring for use in .308 AR's with a collapsible buttstock. Perfect for your new build or as a direct replacement for worn out parts. Made in the USA.
This buffer spring is also recommended for use with the Aero Precision EPC-9 in conjunction with the 7.7oz EPC Buffer and a carbine buffer tube.
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