Well it is a mark 4 L2A3 but
When they come into the USA they have been cut up with a torch all the major pieces are there
But the tube everything fits in has been cut .
In order to make a leagel fully funchining gun
The must have a USA MADE. 16 " barrel
Sterling came with 10" barrel
Also sterling a were full auto
Now they can only be semi auto
You can get one that is the right length but it will have 6' of barrel sticking out like a pencil
You ca have it cut down but you must pay a
$200 tax stamp to make it a short barreled Rifel
Then pay to have it cut
The gun picture is a fully functioning semi auto
Gun that shoots 9 mm ammo