HeHe, let me guess... You've taken the thing apart and now you're having a bitch of a time trying to get that barrel guide seated correctly.
I'm guessing it's there for a reason, so...if you can... put it back in.
I used the unjamming rod to align the barrel guide onto that little rectangular bit within the barrel. Pushed it on there good so it stayed in place and then putting the gun back together was a breeze.
You're a brave man DevilDog! Only a few people have attempted the Benelli autopsy and survived to tell their tale. Mind if I ask why you had to take it apart?
Also, don't know if you're aware, but Airsoftplayers.com has the technical manuals for most Tokyo Marui guns, including the M3: airsoftplayers.com/manuals.asp . Try giving those a close look to see if you put everything back together right.
"Make a Benelli M3 Entry! I've seen DEN's version of this gun, and the job was a bit sloppy... the cut wasn't clean & even, they had to drill a hole through the magazine tube to screw the front sight in the barrel, etc. Well, before they even came out with theirs, I had chopped mine... the day I got it! All you'll need is a hacksaw, masking tape, a mill file, epoxy or crazy glue, a drill, and some black paint. First, figure out how short you want the gun to be. Now use the hacksaw and cut the barrel & magazine tube about one inch from there. Yank the magazine tube spring out. Put the tape around the barrel & magazine tube nice and tight so it forms a perfect band for you to use as a cutting guide. Make sure that the magazine tube cut is just a little shorter than the barrel cut. Use the hacksaw for the final cut, and finish up with the mill file for a nice, straight edge. Drill a small hole in the barrel, directly centered for the front sight. Now you can use needle-nose pliers to screw the sight in through the barrel, or you can simply epoxy it in place. For the magazine tube cap, shave the two retaining "bumps" on the sides and coat the inside of the magazine tube with epoxy. That way when you slip the cap back in, epoxy won't ooze out the sides. On top of that, you won't have those two ugly holes on the sides. Wad some tissue & stick it in the barrel & paint the bare metal leftbehind from the cut. The tissue will keep paint from getting into the inner barrels. After it dries, pull out the wad & laugh at the guys who bought their M3 from DEN"