Airsoft Canada - View Single Post

LUTNIT · February 10th, 2009, 17:24

Looks like to save material KART decided to make the inner barrel smaller. Since making it a tightbore would be more expensive they reduced the wall thickness. I am trying to install a tightbore and nothing I have will fit down the outer barrel. I took my caliper and found the outer diameter of several barrels.

JBU - 8.54mm
Prometheus - 8.64mm
KART EBR stock barrel - 8.21mm

The stock barrel fits really snug and since I can't drill out the outer barrel I now need to buy an aftermarket outer barrel just to install a tightbore.

Just stay away from KART/ECHO1, they are shit.

February 10th, 2009, 17:24	#4
LUTNIT Trader rating Join Date: Dec 2005 Location: Ottawa	Looks like to save material KART decided to make the inner barrel smaller. Since making it a tightbore would be more expensive they reduced the wall thickness. I am trying to install a tightbore and nothing I have will fit down the outer barrel. I took my caliper and found the outer diameter of several barrels. JBU - 8.54mm Prometheus - 8.64mm KART EBR stock barrel - 8.21mm The stock barrel fits really snug and since I can't drill out the outer barrel I now need to buy an aftermarket outer barrel just to install a tightbore. Just stay away from KART/ECHO1, they are shit.