

Rather curiously, the fire selector is shown in different positions on the left and right sides of the rifle on the left side it is pointed to safe, while on the right side the safe and auto positions are reversed and the selector notch is pointed at semi. It also has a magazine capacity of 40 rounds, but the model is that of a 30-round magazine. In one cutscene Walker uses a Surefire weaponlight, but this ability is not seen in gameplay. It provides a higher rate of fire than other assault rifles, but does not have fire mode selection and is weaker than the battle rifles. For some reason, the M4 has two rear iron sights, a flip up type and an A2 type mounted backwards and seemingly clogged up with sand it is shown with tan furnishings, a Magpul-style handling loop on the magazine, an extended, threaded flash hider, and an aftermarket handguard seemingly based on the VLTOR CASV-EL. It is possible to attach a suppressor at any time during gameplay (after the ability is taught to the player near the end of chapter 1) using the secondary fire ability. The M4A1 is Walker's starting rifle and is used by enemies throughout the game it is also Walker's designated weapon and he will always be shown carrying one in cutscenes regardless of what the player is actually equipped with certain story sections will also show Walker using one regardless of what he actually has. Being the weakest gun in the game it is only really a placeholder until the player finds something better. The gun is modelled with an uncocked hammer, despite being a DA / SA pistol, and Walker is always shown pulling the slide after reloading.

During stealth sections, Adams and Lugo will produce suppressed M9s to take down targets if an alert has not yet been sounded, though if the target is too distant Lugo may use his sniper rifle instead. 5.3 Knight's Armament Company M110 SASSĪ Beretta M9 with a greyish slide is the starting pistol for Walker and the basic sidearm used by enemy soldiers its alternate fire mode allows a suppressor to be equipped, though this is very rarely useful.
