there is only one gain to fitting a silencer you will have a larger diameter to grip when cocking the rifle and it will spread the load in your hand and
make it feel like it has less cocking effort i do not like cocking a rifle by holding the silencer as they are not made as a cocking aid some are up to it
some are not the slip on ones mentioned from aboard are strong enough i used a sak on a screw cut barrel and half held it and the barrel
if you add a sound moderator to a full length barrel it will be a bit long up to you if it suet you or not in 22 if you cut your barrel down to 10.5"