swappin' out an inner barrel on a TM M4A1

[Cpl T. Syndrome]

I'm Looking to swap out my inner barrel on my TM M4A1.
Can get a great deal on a "Mad Bull" 6.03 tight bore, 363mm.
I'm gonna do the swap myself..Although I've never takin my AEG apart I am fairly mechanically inclined and was told this is fairly easy to do.
1 of the things I am worried about is breaking a reciever tab upon opening,any idea's??..also hop up is not attached with this model.
If anyone has any idea's to make this venture go smoothly for me it would greatly be appreciated.

[ThunderCactus]

its a TM so you take out the rear receiver pin and just pull the mechbox right out, then remove the forward pin, slide out the hopup unit, remove the barrel lock, and very CAREFULLY remove the barrel by rotating and gently pulling, if the hopup is on or you pull too hard you'll rip the hopup rubber.
put the hopup rubber on the other barrel and grease the exterior of the hopup sleeve and interior of the hopup chamber, put it in the same way you took it out, gently pushing while rotating, make sure the barrel is aligned (the slot for the hopup is pointing up), then put it all back together
very easy thing to do, and hopup rubbers are only like 5$ lol

[Skladfin]

Be careful with the hop up rubber. There are 2 things that can happen and has happened to me:

Forced it out because it was literally stuck there so it got stretched out and now it won't fit.

Lose the Hop-up rubber and your done for unless you get a new one. It's a TEENY TINY bit of piece that practically runs your hop up, without that = no hop up.

That's about it, other than that it's not so hard.

[Cpl T. Syndrome]

Barrel is here gonna install tonight, will post on how it went

[Cpl T. Syndrome]

Well barrel is in..no real probs accept the hop up rubber, that was tricky..Don't why some people told me to watch out for upper reciever tabs..as long as you're careful there no problem..a lot of thanks to the people who sent me info, help tremendously

Cpl T.Syndrome
Balckwater North

[Cpl T. Syndrome]

Didn't do a thing for my fps, did I do somethin wrong??

[Spa]

its called the nub:P

Originally Posted by Skladfin

Be careful with the hop up rubber. There are 2 things that can happen and has happened to me:

Forced it out because it was literally stuck there so it got stretched out and now it won't fit.

Lose the Hop-up rubber and your done for unless you get a new one. It's a TEENY TINY bit of piece that practically runs your hop up, without that = no hop up.

That's about it, other than that it's not so hard.