Crosman Mark II question

[cvarcher]

If you have the MArk II and wanted to switch to the Mark I 22 cal barrel will the 22 cal barrel still fit the breech nut at the breech  and muzzle nut in the shroud of the Mark II? In other words are both barrels the same OD  diameter and threads and just the caliber bore is differant?

[mark2]

Just checked my Crosman MKI/MKII factory service manual, and yes, the front and rear barrel nuts are the same for both the .177 and .22 barrels.

[eric]

are the bolts the same size  of both guns ?? ---- the leade of BOTH barrels will need to match the leade of a/the .22  cal  barrel  unless you switch bolts to match thee leade/barrel .  that is assuming  BOTH bolts between the 2 said  guns are different , maybe they  are the same  --- i don't know 

[mark2]

The bolt (and bolt seal) needs to be changed to match the caliber of barrel used.  Should have mentioned earlier.

[cvarcher]

Ok, thankyou for answering that-sounds like both caliber crosman barrels are the same OD then too. . So the bolt would have to be changed .Ok.