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Kratos Design Group M4 Receiver Extension/Buffer Tube


The Kratos M4 Receiver Extension is a 6-position, Mil-Spec sized, AR15 / M4 profile buffer tube and is designed to work with Mil-Spec dimensioned M4/AR-15 type collapsible stocks.

Constructed of impact-extruded 7075-T6 aluminum with Type III, Class 2 hard coat anodizing for an extremely hard, abrasion resistant surface. 

Finding the perfect length of pull is easy with six adjustable stock positions.

Weight: 3.9oz
Material: Impact Extruded 7075 aluminum
Finish: Type 3, Class 2 hardcoat Anodize
Made in USA

4 in stock

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