[Weapon] PTRS-41 Anti-Tank Rifle

This has been in the works on and off for awhile, but I leave for college in 4 days so I gotta go speedrun mode

Made originally for the WW2 Soviets but this would fit well with the Militia faction in the base game as a pickup kit since the PTRS-41 has shown up in Chechnya and Donbass (and also Syria in the hands of the FSA but far less common)