The Korean K1 carbine, K201 grenade launcher, K3 SAW, K5 pistol, and K7 suppressed submachine gun are all widely used in addition to the Heckler & Koch MP5A5 and MP5SD6 submachine guns for VBSS and CT, the HK416 assault rifle, Beretta 92FS, Sig Sauer P226 Navy, and versions of the Arctic Warfare.
Like the Accuracy International AW, the Tubb 2000's barrel can be changed by the end-user, allowing the same rifle to support various calibers.
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