BSA Long Lee (?) Trainer - designation?

[Promo]

What is the name of this BSA made .22 trainer? Is it a "Long Lee" .22 trainer? But it has a different bolt head than the "The "Long Lee" - Magazine Lee-Enfield Rifle (M.L.E.) Rifle converted to .22-inch Rimfire" on the rifleman website?

And anyone an idea what the engraving below the BSA on the receiver ring means? Is it SSC or SSD?

Thanks!

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.