	<weapon type="AK47">
		<data slot="RIFLE" firetype="INSTANT_HIT" damagetype="BULLET" group="SMG" targetrange="115.0" weaponrange="150.0" clipsize="50" ammomax="600" timebetweenshots="60">
			<damage base="90" networkplayermod="2.0" networkpedmod="1.0"/>
			<physics force="187.5"/>
			<reload time="6066" fasttime="1166" crouchtime="2066"/>

			<aiming accuracy="0.5">
				<offset         x="0.16" y="1.0" z="0.55"/>
				<crouchedoffset x="0.1"  y="1.0" z="0.12"/>
				<reticule standing="0.55" ducked="0.46" scale="0.38"/>
			</aiming>

			<pickup regentime="500000" ammoonstreet="50"/>

			<controller>
				<rumble duration="90" intensity="0.1"/>
			</controller>

			<flags>
				<flag>GUN</flag>
				<flag>CAN_AIM</flag>
				<flag>CAN_FREE_AIM</flag>
				<flag>ANIM_RELOAD</flag>
				<flag>ANIM_CROUCH_FIRE</flag>
				<flag>2HANDED</flag>
				<flag>ARMOUR_PENETRATING</flag>
			</flags>
		</data>

		<assets model="w_ak47">
			<anim group="gun@ak47">
				<rates firerate="2.2" blindfirerate="2.2"/>
			</anim>

			<effects>
				<muzzle fx="muz_machine"/>
				<shell fx="weap_ejected_rifle"/>
			</effects>
		</assets>
	</weapon>

You will require boow's Thompson Mod before applying this line.
Link: http://www.gta4-mods.com/weapons/thompson-m1a1-f4142