1862 Richmond Rifle Musket, Lock Cavity Published July 12, 2015 at 735 × 324 in 1862 Richmond Rifle Musket, Lock Cavity 1862 Richmond Rifle Musket, Lock Cavity 1862 Richmond Rifle Musket, Lock Cavity. This Rifle has a High Hump Lock Plate the stock is one that was Captured during the raid of Harpers Ferry in April 1861. As you can see if has the primer feed cuts in the mul s foot area.