sentences:  MSD's primary rifle is the Mk18 type 2 carbine with the Aimpoint T-1 Micro combat optic and AN/PEQ-15 ATPIAL.MSD also qualifies with the Colt submachine gun, different Heckler & Koch MP5 submachine gun variants, Remington 870 shotguns while SIG Sauer, Glock and Beretta pistols are assigned as sidearms.MSD agents are trained to use and deploy with U.S. Military weapons, including the M249, M240, and M2 machine guns, M203 and Mk 19 grenade launchers, and precision fire rifles such as the Mk11 Mod 1 and MK 12 SPR.