The Canadian Arsenals Limited Sterling (SMG 9mm C1) differed from it's UK counterpart in many ways such as:
- C1 had a one piece bolt, the UK one had a two piece
- different recoil springs
- the mags as ours had a basic follower (10 and 30 rd capacity) and the UK one a roller which is mentioned on here in another post, and the UK one is a 34rd mag, not 32rd. STENs had 32 rd mags though, and the Cdn 9mm Ball ammo used to come in boxes of 64rds, which was carried over from the STEN days. I have no idea how its packed now.
- trigger groups are different, and trigger guards
- rear butts are slightly different (the UK one is lighter with more holes in the strut)
- mag releases are different
- front and rear sights are different (C1 SMG used the same front sight as the FN C1 and C2 family of small arms, and the front sight adjusting screw was the same as the arctic trigger guard retaining screw on the C1 and C2.
- different bayonets are used (FNC1 on ours and the No5 jungle carbine bayonet on the UK one)
- end caps are different
- on some UK versions even the protective surfaces were painted, while teh C1 SMG was phosphated
- The UK had a version which was even suppressed called the L34A1.
About the C1 SMG, with the safety catch on 'S' the bolt was also locked in the forward position to prevent any 'drop fire' incidents. With the change lever on R or A, if dropped or when jumping from a vehicle with the bolt forward (wpn not cocked) there acan be enpough inertia to bring the bolt back far enough to pick up a cartridge (but no enough usually to cock it) from the mag and fire it, thus re-cocking the weapon. with the change lever on 'S' and cocked, the action again could not be fired as it was locked to the rear.
Cheers,
Wes