HK Army XV (15") Barrel Kit with Case - Dust Gold External Marker Upgrades you also have the option

you also have the option to switch out the grip for your personal preference

manufactured by King Arms

21% Polyester

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Uses M4 parts and spare magazines

HK Army XV (15") Barrel Kit with Case - Dust Gold External Marker Upgrades you also have the optionCrafted with accuracy and style in mind, the XV Barrel Kit delivers unrivaled performance. The precision barrel bore honing used in the development of the XV allows for improved diameter uniformity and a smooth interior finish. This attention to surface detail will deliver you the ball on ball accuracy you are looking for in a high end barrel system. The XV Barrel Kit comes complete with 3 Barrel Backs, a Barrel Tip and 2 Interchangeable Accent Rings.