Airsoft Canada - View Single Post - Tanio Koba / KJW M4 GBBR Basic Information and FAQ

audi_bhoy · February 17th, 2012, 13:24

Wow, received my V2 bolt earlier today, it's such a pain to install a cradle in there ! V1 bolts takes 2 minutes to adjust it with barely a plat screwdriver, while for the V2 the spring has to be attached to the screw holding the CVR in place, then place the piston kit into the bolt carrier and replace the pin in the back.

Before getting the cradle velocity reducer in, the bolt chronied at about 440-450.

I'll post once I find out the cradle's spacers value on this bolt!

Edit: I have issues now with the CVR in place, with only the o-ring, no spacers on, the bolt shoots at about 250 fps...! Plus there is various cycling issues, such as multiple shots in semi-auto, and gas venting on the full auto and so on. I'll be searching for more info on this as I don't know what's going on lol !

Eidt 2: Tried with the stock valve and added only the CVR O-Ring, it does shoot 263 very stable (1.5 fps on 3 shots), but it's way too low... I guess I'll have to drill the CVR valve so it allows more gas, like the stock valve... Unless someone has the miracle?

February 17th, 2012, 13:24	#690
audi_bhoy Trader rating Join Date: Mar 2009 Location: Trois-Rivières	Wow, received my V2 bolt earlier today, it's such a pain to install a cradle in there ! V1 bolts takes 2 minutes to adjust it with barely a plat screwdriver, while for the V2 the spring has to be attached to the screw holding the CVR in place, then place the piston kit into the bolt carrier and replace the pin in the back. Before getting the cradle velocity reducer in, the bolt chronied at about 440-450. I'll post once I find out the cradle's spacers value on this bolt! Edit: I have issues now with the CVR in place, with only the o-ring, no spacers on, the bolt shoots at about 250 fps...! Plus there is various cycling issues, such as multiple shots in semi-auto, and gas venting on the full auto and so on. I'll be searching for more info on this as I don't know what's going on lol ! Eidt 2: Tried with the stock valve and added only the CVR O-Ring, it does shoot 263 very stable (1.5 fps on 3 shots), but it's way too low... I guess I'll have to drill the CVR valve so it allows more gas, like the stock valve... Unless someone has the miracle? Last edited by audi_bhoy; February 17th, 2012 at 19:58..