HEY!Some things I could never understand about the British muskets, the stepped butt tangs were pretty long on most models up until the late 3rd model; or at least longer than they actually needed to be.
Locks without detachable pans.
The United Lock Plate Makers and Tang Forgers, local 432, (ULPMTF) wants you to leave our pans and tangs alone! We've been doing them that way for decades!
LD