AUTOMAG V : A large handgun in .50 AE, very heavy recoil, slow rate of hire, and only 5 round mag, but accurate and intense damage.
AUTOMAG III ( Maybe as an alt to the Deagle ? ) Like the AUTOMAG V, but in .30 Carbine. So weaker than the V, but still very powerful in terms of handguns.
Lewis Gun ( Maybe with some variant upgrades such as 97 round pan mag ? ) : World Wars machine gun in .303 British, decent damage and rate of fire, recoil isn’t very heavy but very bouncy, high weight slowing down running speeds.
M16A1 : Classic to go with the other M16 guns, good rate of fire and damage, but more recoil than newer M16s with more weight.
AR-10 ( Old version from 50s/60s ) : M16 like gun in hard hitting .308 Winchester, similar stats to the AG-3, but faster firing rate with more recoil.
HK VP70 : 9mm polymer handgun, very light weight and great on handling, good mag size, but small damage. With its stock ( maybe unlockable ? ) on, it has an option for a 3 round burst fire mode, giving it a 2200 rpm fire rate.
Mauser C96 Carbine : A variant of the 9mm C96 pistol from Mauser with a stock and longer barrel. Very little recoil, small damage, but decent range, with maybe some unlockable 20 and 40 rounds mags, with default being a stripper clip.
FN FAL : yes yes! The gun everybody has suggested at least 10 times. Maybe different types of FALs ? Old School Wooden FAL with solid wood stock in .308 Winchester, and maybe Polymer with more common Nato rounds, how about some PARA FALs ? Hell, why not even the
FN CAL, A FAL in 5.56 mm.
Winchester Model 70 : Just as an alternate to some of the sniper rifles, a simple but very strong and powerful old school bolt action rifle in .308 Winchester. Without a scope could be a nice rival/alt to the Mosin.
And just for laughs and giggles ~
Lahti 20mm A.T.R : Yes I am sorry for suggesting this… Butttt, just saying, could be a good melee weapon.