I have one made by my local machinist buddy... just an FYI... there is a good chance that any new cylinder will fit... however as there is always an acceptable range of measurements, if the gun were at minimum & the cylinder at maximum ( for example ) it may not fit well enough to time correctly... but that would be the same, even if the cylinder were for the same caliber but from another gun... my cylinder shoots both ACP & Autorim, & I have a 45 Colt cylinder as well... & have even considered doing a 45 Win Mag cylinder...