The Mark is an FPS game created by T7 games, following US Marine Steve Fletcher and Mercenary Austin Hawke as they try to foil a terrorist plot.
The player can choose between playing as either character in solo or co-operative multiplayer, the player can change their character after every set of levels and both characters have their own starting weaponry and special ability (Slow-Motion for Steve and marking enemies for Austin) as well as unique sections when both characters split up.
The following weapons appear in the video game The Mark:
The MP7 is usable, it has what is seemingly an unusuable flashlight. (The game's controls list the lasersight key as "Laser/Light" but no weapons appear to use an usable light, so they were seemingly unfinished leaving only the lasersights usable.)
The Colt Model 933 appears as Steve's starting primary weapon, while most NPC 933s have only ironsights, Steve's 933 will always have an ACOG scope in third person, however when Austin picks up an enemy 933, it will automatically gain an ACOG scope.
The HK69A1 appears in-game as the token Grenade Launcher, it fires explosive grenades, as one of the game's many odd sounds for it's weapons, it makes a stock magnum gunshot noise as opposed to sounding like a launcher.