mp5 sd5 barrel mod
 

so after looking at my gun, I started thinking that I could probably get a few inches of barrel in the "silencer" so I did some research, yes someone did research without asking right away, and I figured the p90 would be the best best. Has anyone done this before?

I did this for airpistol and I want to do it for my g36c using a cheap used flash hinder if i can find one.

Basicly my method: used a washer on the front and I cut an aluminum pipe, jb welded the washer onto the front.

The diameter of the hinder and the pipe are almost the same so I just used tape to fill in the gap and the pipe holds onto the hinder.


The aluminum pipe fro home depot 1" diameter 3feet was $10, wsher $0.87
I spray painted the fake "silencer" flat black.

Something stupid I did was use a hack saw to cut the pipe when my pipe cutter which was in my tool box a few feet away. d'oh

An improvement would be to find a more secure method of holding the pipe onto the hinder.

hm interesting, im thinking of replacing the whole barrel for a longer one....

I used a Thompson length tight bore in mine, had to drill out the silencer to clear the barrel

Thats exactly what im thinking of doing, how did it working for you? Worth it?

You can fit in a 330mm inner barrel into the SD. I cut one that length for mine, works very well, even gave me an extra 20fps.

my mp5a5 has an m4 barrel in it, with a silencer covering it, it is very scary looking, it also upped my fps a hair and gave me slightly better range and accuracy...excellent idea, just dont over due it, or it becomes less effective in CQB

when you extend the inner, there isn't any silencer effect so it gets louder.
I play more outdoor than cqb so I wanted the extended range/ tighter grouping and moving to a 6.04 helped me.

I installed the barrel and then the silencer wouldn't fit over, so I used a drill press (it was there) and a bit thats larger than the inner barrel and drilled the center of the silencer out.

anyone know any place to get a 330mm barrel? tight bore would be nice...

P.S. i just pulled my barrel out trying to find out how long it is. i have no experience doing this, and a rubber sleave almost came out wit it. is this the hop up, and did i wreck it? if so, any tips on how to do it in the future?

First off, don't attempt to do things like this without knowing how, ask before you tear your gun apart. Check out mechbox.com for instruction on how it all goes together.
You can get tightbores from any retailer, Canadian or US. Try eHobby or Redwolf.

I know i'm an idiot ok? and i checked mechbox.com, all they have is the main disasembly of an mp5-j. no mp5 SD5. and redwolf is down.