Author of this mod is TriXigT (trixigt@gmail.com)!

If you choose to upload this to your site, please mention me and my email =)

Firstly - BACKUP NOW!

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Install of weapon -

Choose between regular or silencer - Remove the "REGULAR/SILENCER" in both files -

Open up SPARK IV -

Browse to cdimages/weapons.img - You can search -

Import both files (w_mp5) -

REBUILD AND SAVE -

DONE!

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Install of sound (For both silenced/regular) - 

Download GTAIVAUD (http://www.gtainside.com/en/download.php?do=comments&cat=328&start=0&id=26369&orderBy=) -

Open up SPARK IV -

Browse to audio/sfx/resident.rpf/ (SELECT RESIDENT TO THE RIGHT) -

Export WEAPONS.ivaud - 

Open up GTAIVAUD - 

Open WEAPONS.ivaud - 

Scroll down to PCM164 and PCM165 - 

With one of them selected, import silenced.wav/regular.wav depending on what model you choosed - Do the same with the other one -

SAVE AND IMPORT WEAPONS.ivaud again with SPARK IV - BE SURE TO SAVE!

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Install of weapon specifications -

Open /Rockstar Games\Grand Theft Auto IV\common\data\weaponinfo.xml

Replace the lines who matches this (Not matching exactly... Just the first line - <weapon type="MP5">)

--------SILENCED P90

<weapon type="MP5">
		<data slot="SMG" firetype="INSTANT_HIT" damagetype="BULLET" group="SMG" targetrange="55.0" weaponrange="60.0" clipsize="51" ammomax="1200" timebetweenshots="66">
			<damage base="20" networkplayermod="2.5" networkpedmod="1.25"/>
			<physics force="50.0"/>
			<reload time="1666" fasttime="1666" crouchtime="2533"/>

			<aiming accuracy="0.55">
				<offset         x="0.13" y="1.0" z="0.45"/>
				<crouchedoffset x="0.11" y="1.0" z="-0.02"/>
				<reticule standing="0.75" ducked="0.6" scale="0.3"/>
			</aiming>

			<pickup regentime="360000" ammoonstreet="60"/>

			<controller>
        <rumble duration="100" intensity="0.02"/>
			</controller>

			<flags>
				<flag>GUN</flag>
				<flag>CAN_AIM</flag>
				<flag>CAN_FREE_AIM</flag>
				<flag>ANIM_RELOAD</flag>
				<flag>ANIM_CROUCH_FIRE</flag>
				<flag>TREAT_AS_2HANDED_IN_COVER</flag>
				<flag>SILENCED</flag>
			</flags>
		</data>

		<assets model="w_mp5">
			<anim group="gun@mp5k" meleegroup1="firearm_core">
                        <rates firerate="1.5" blindfirerate="1.5"/>
      </anim>

      <effects>
				<muzzle fx="muz_smg"/>
				<shell fx="weap_ejected_smg"/>
			</effects>
		</assets>
	</weapon>



------------------ REGULAR P90

<weapon type="MP5">
		<data slot="SMG" firetype="INSTANT_HIT" damagetype="BULLET" group="SMG" targetrange="55.0" weaponrange="60.0" clipsize="51" ammomax="1200" timebetweenshots="66">
			<damage base="20" networkplayermod="2.5" networkpedmod="1.25"/>
			<physics force="50.0"/>
			<reload time="1666" fasttime="1666" crouchtime="2533"/>

			<aiming accuracy="0.55">
				<offset         x="0.13" y="1.0" z="0.45"/>
				<crouchedoffset x="0.11" y="1.0" z="-0.02"/>
				<reticule standing="0.75" ducked="0.6" scale="0.3"/>
			</aiming>

			<pickup regentime="360000" ammoonstreet="60"/>

			<controller>
        <rumble duration="100" intensity="0.02"/>
			</controller>

			<flags>
				<flag>GUN</flag>
				<flag>CAN_AIM</flag>
				<flag>CAN_FREE_AIM</flag>
				<flag>ANIM_RELOAD</flag>
				<flag>ANIM_CROUCH_FIRE</flag>
				<flag>TREAT_AS_2HANDED_IN_COVER</flag>
			</flags>
		</data>

		<assets model="w_mp5">
			<anim group="gun@mp5k" meleegroup1="firearm_core">
                        <rates firerate="1.5" blindfirerate="1.5"/>
      </anim>

      <effects>
				<muzzle fx="muz_smg"/>
				<shell fx="weap_ejected_smg"/>
			</effects>
		</assets>
	</weapon>

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Author of this mod is TriXigT (trixigt@gmail.com)!