Matrix / JG Stubby 4" Aluminum Outer Barrel for G3 series Airsoft AEG

"Does not fit TM, but all you need to do is dremal and sand the inner.
All and all it works fine.

"Does not fit CA G3 - inside diameter too tight. You would need a drill press to modify this.

Good quality metal, lathe marks much lighter than on the stock CA G3, so it doesn't look 'threaded' like the stock one does.