M4 recoil tube mod from 1 position to 3-4 position

[dvail1952]

Does anyone have drawings with dimensions that would allow a machinist to modify a one position recoil tube into a 3 or 4 position tube?

[M2_shootr]

Haven’t seen any

unless you have a machinist that works pro-bono, it would be cheaper to replace the tube

[dvail1952]

I would replace the tube if I could find one.

[RyanExtra]

Midwest gun works had em a month ago. Sign up for alerts. 

[D'zaster]

FYI, to order the 3-position recoil tube from Midwest, gotta be LEO/military. I ordered from Benelliparts.com who had em in stock at the time.

[StrangerDanger]

The Midwest ones are also stripped. Which generally is no big deal, but recovering the flexible ring from your existing receiver extension is a pain in the ass. You have to cut a notch into the race channel with a rotary tool so that you can slide a punch/pick beneath one end of it in order to dislodge it. Or buy the flexible ring elsewhere.