There were at the time Two Baton guns ORIGINALY in Service at the start, & through the mid period of 'The Troubles'.
The L48 & the L67, identical to look at like the top one dipicted in the original post on here.
The difference was, one was smooth bored. & the other had a Rifled Bore.
The Nomenclature was Engraved on the side of them after workshops conversion.
The sling used on them was a Modified Tan '37 Pattern webbing one.
The Butt plate also had Two 1" holes in it. This allowing the metal sling LOOP to be turned 180 Degrees. & fed through the Bottom hole. Loop turned back to it's original position & the remainder of the sling fed through it. The plate also had rounded ends like the Sten T Butt. NOT squared ended ones on the rectangular one above.
The 'Sterling' Pattern sling clip that was put on these Modified slings. Then clipped to the front Barrel Band Sling loop attachment point.
The Baton gun dipicted above has a Fake butt assembly on it. A LOT of these were 'Made' by a well known Gun Dealer Friend of Mine. Genuine 1.5" Signal pistols. Genuine New Unused Barrels obtained from Enfield when it closed were fitted. & the butts were 'Made' up & welded on. They are not the correct profile or size. It is also missing the FOLDING three aperture rear sight. Each hole, starting at the bottom. was for: 25, 50 & 75 Yards Range.
the front sling band is not correct either. It SHOULD be 1/2" down from the muzzle. With a small loop underneath to accept the 'Sterling' sling clip. & ALSO have a foresight on it. They were Non removable, unlike the Federal ones. Which also incorporated a swivelling / folding sling loop.
The lower dipicted Riot gun I recall was named 'The Federal', & was introduced to supplement the insufficient Numbers of L48 & 67 Guns in Service back then.