Double Bell By-813s - Hk416a5 Almost

[Naster]

Can you be a bit more specific about which bit you are trying to remove ? a silencer would generally just replace the flash hider. 

The part in the red rectangle in the picture I've posted. I thought the flash hider is only the small part in front of it
I want to to put the silencer on the thread that sticks right after the rail

 

[Nick G]

The part in the red rectangle in the picture I've posted. I thought the flash hider is only the small part in front of it
I want to to put the silencer on the thread that sticks right after the rail

that should just unscrew , sometimes they can be very tight, and remember it'll be a ccw thread so unscrews the oposite way to a 'normal' thread . You going to run the silencer hard against the rail ? that'lllook very cool !

if you want to take the birdcage off of that extension there is usually a grub screw under the rear of it that needs releasing

 

[Naster]

that should just unscrew , sometimes they can be very tight, and remember it'll be a ccw thread so unscrews the oposite way to a 'normal' thread . You going to run the silencer hard against the rail ? that'lllook very cool !

if you want to take the birdcage off of that extension there is usually a grub screw under the rear of it that needs releasing

Yes, it is CCW thread. I've tried to unscrew it using pliers, but didn't move it at all.

and yeah- the flash hider has this tiny screw on the rear that releases it before you are able to unscrew it, but I've didn't noticed anything on the big part behind it that I need to remove in order to put the suppressor on the outer barrel- green rectangle on this picture:

View attachment 83116

 

[Nick G]

That is tight then. I've never had a barrel extension that had a grub screw so I doubt there will be one. You might try some heat, ended up dunking one of mine in a mug of boiling water to get it to shift . There is also a verey very slight chance it is a 'normal' thread but I'd be incredibly surprised they are quite unusual in airsoft. I'd go with heat and see if that helps, might have been thread locked.

 

[mightyjebus]

I just checked and it's a -14mm thread. mine was hand tight but the QC from China probably means your one has threadlock applied unlike mine. Heat is probably the only way to get it off unless you have a strap wrench.

one other option if you don't want the barrel extension is to remove the inner barrel and drill a hole through the outer barrel and stick a screwdriver through the hole and twist.