I'm giving away this design for free, you can use it to do what you so desire. I don't ask for credit or stuff. Just adding 1 more basic gun in the Pimp My Gun pre-builds. Have fun!
Here's the magic word :
<weapon>
<group x="885" y="663.4" rotation="0" scale="1" flip="1,1">
<part id="ISight007B" x="-5.7" y="-2.35" rotation="90" scale="1" flip="1,1" colors="666666,666666"/>
<part id="ISight007A" x="0.65" y="10.5" rotation="0" scale="1" flip="1,1" colors="666666,666666"/>
</group>
<group x="1173.5" y="665.4" rotation="0" scale="1" flip="1,1">
<part id="Shape15" x="0.45" y="2.5" rotation="0" scale="1" flip="-1,-1" colors="ffffff"/>
<part id="ISight008B" x="-7.15" y="-3.4" rotation="90" scale="1" flip="1,1" colors="666666"/>
<part id="ISight008A" x="-4.1" y="9.05" rotation="0" scale="1" flip="1,1" colors="666666,666666"/>
</group>
<part id="PGrip003" x="856" y="774.95" rotation="0" scale="1" flip="1,1" colors="666666,666666,666666"/>
<part id="DustCover01" x="958.7" y="700.75" rotation="0" scale="1" flip="1,1" colors="777777,555555,999999,cccccc"/>
<part id="UReceiver003" x="922.3" y="696.15" rotation="0.0008697509765625" scale="1" flip="1,1" colors="ac9c7b,666666,666666"/>
<part id="LReceiver001" x="917.3" y="726.8" rotation="0" scale="1" flip="1,1" colors="ac9c7b,777777,666666"/>
<part id="Bolt001" x="925.2" y="697" rotation="0" scale="1" flip="1,1" colors="666666"/>
<group x="1083.85" y="717.65" rotation="0" scale="1" flip="1,1">
<part id="Handguard008" x="-7.8" y="-9.7" rotation="0" scale="1" flip="1,1" colors="999999,666666"/>
<part id="Shape15" x="-71.8" y="13.25" rotation="0" scale="1" flip="1,1" colors="ffffff"/>
<part id="Shape07" x="-6.8" y="20.25" rotation="0" scale="1" flip="1,1" colors="ffffff"/>
<part id="Shape07" x="24.15" y="20.25" rotation="0" scale="1" flip="1,1" colors="ffffff"/>
<part id="Shape15" x="90.15" y="18.25" rotation="0" scale="1" flip="-1,1" colors="ffffff"/>
</group>
<part id="Shape07" x="1084" y="700.95" rotation="0" scale="1" flip="1,1" colors="444444"/>
<part id="Silencer07" x="1189" y="700.95" rotation="0" scale="1.15" flip="1,1" colors="666666,666666"/>
<part id="GasTube01" x="1078.55" y="686.4" rotation="0" scale="1" flip="1,1" colors="e1e1e1"/>
<part id="GasBlock01" x="1166" y="698.95" rotation="0" scale="1" flip="1,1" colors="999999"/>
<part id="Barrel019" x="1094.25" y="702.7" rotation="0" scale="1" flip="1,1" colors="666666"/>
<part id="RIS013Up" x="1091" y="694.35" rotation="0" scale="1" flip="1,1" colors="666666,666666"/>
<part id="MagAcc04" x="963.05" y="800.8" rotation="0" scale="1" flip="1,1" colors="666666"/>
<part id="RMag011" x="963" y="759.95" rotation="0" scale="1" flip="1,1" colors="918382"/>
<group x="801.35" y="734.4" rotation="0" scale="1" flip="1,1">
<group x="0" y="7.8" rotation="0" scale="1.1" flip="1,1">
<part id="AStock06A" x="-0.3" y="-7.35" rotation="0" scale="0.75" flip="1,1" colors="666666,666666,e1e1e1,e1e1e1"/>
<part id="Shape07" x="34.2" y="-33.75" rotation="0" scale="0.75" flip="1,1" colors="ffffff"/>
<part id="Shape01" x="-50.9" y="-11.75" rotation="0" scale="2.625" flip="1,1" colors="ffffff"/>
<part id="Shape04" x="-86.5" y="16.35" rotation="-80" scale="0.75" flip="1,1" colors="ffffff"/>
</group>
<part id="Bolt007" x="25.6" y="-23.45" rotation="0" scale="1" flip="-1,1" colors="cccccc"/>
<part id="Bolt010" x="-35.35" y="-16.45" rotation="0" scale="0.8" flip="1,1" colors="666666"/>
<part id="AStock01D" x="8.4" y="-26.2" rotation="0" scale="0.75" flip="1,1" colors="666666"/>
<part id="Shape01" x="-47.35" y="-51.45" rotation="0" scale="1" flip="1,1" colors="ffffff"/>
<part id="Shape15" x="-30.35" y="-42.45" rotation="42" scale="1" flip="1,-1" colors="ffffff"/>
<part id="Shape20" x="-25.35" y="-24.45" rotation="0" scale="0.2" flip="1,-1" colors="666666"/>
<part id="Shape05" x="-14.3" y="-24.15" rotation="0" scale="0.25" flip="1,-1" colors="666666"/>
<part id="Shape05" x="3.65" y="-24.15" rotation="0" scale="0.25" flip="1,-1" colors="666666"/>
<part id="Shape05" x="25.65" y="-24.15" rotation="0" scale="0.25" flip="1,-1" colors="666666"/>
</group>
</weapon>
Just copy paste the code below to the 'Import' section in 'File'.