CZ 455 DISASSEMBLY FOR EXCHANGING THE BARREL
Press the magazine catch and extract the magazine out of the rifle.
Open the bolt and move it to the rearmost position.
Squeeze the trigger to maximum and remove the bolt.
Screw off both the stock screws.
Remove the trigger guard together with its plate.
Remove the stock.
Disassemble the magazine housing insert (only in caliber .22 LR)
Loosen the magazine housing rear screw by 1-2 twists.
Screw off both the barrel screws.
Remove the barrel.