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The Definitive Guide to kac ras rail

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The IBN system enables the rail itself to act given that the barrel nut when torqued onto the rifle, fully reducing the need for a separate metal barrel nut. M-LOK extras may be mounted wherever alongside the URX 4?s length, which makes it one of the most user configurable designs https://kac-m4-ras74951.verybigblog.com/26473517/a-review-of-knights-armament-m4-quad-rail

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