Now I soldiered with the old .303 infield, great gun very accurate, but was bolt action and the magazine had just ten rounds.
When I joined the RAF I was also trained on the old Number 4 Mk2 Lee Enfield, in my opinion, along with the Number 1 Mk3* was the finest bolt action military rifle ever built, short throw, very smooth, fast bolt action and spare magazines could be carried. I own a few Lee Enfields today, both Number 4's and Number 1's, very accurate and reliable. I have witnessed Lee Enfields at Bisley in UK being used out to 1200 yards, accurately.
The FN SLR was just coming into service when left again quite a good rifle but one of the draw backs was it's lenght and if your weapons container hit the ground a bit hard you would wind up with a bent barrel, it would fire and with luck you would hit your NCO.
The British SLR L1A1 is a very different beast to the FN FAL, there were something like 20 mods carried out on the rifle, different gas regulator, cocking handle, take down catch, pistol grip, front and rear sights and working parts to name a few. As Lee stated, its biggest problem was its overall length, trying to get out of a Land Rover or Bedford in a hurry led to all kinds of problems, but overall it was a very good rifle, reliable, accurate and hard hitting.
SA80 now I have been invited back to my old regiment a few times and have been let lose with this weapon and I found it was very compact with a huge range the SUSAT on it was great. Okay it can only be fired from your right shoulder but there again most of the other weapons are the same even the old .303 could only be used from the right shoulder any one who was left handed just had to learn to use that way and they all did. The SA80 is a much better weapon for street fighting than the weapons that have the magazine in front of the trigger, as this set up you either lose the range by having a shorter barrel or you have the longer barrel and have a clumsy weapon. The SAS normally engage with people at a close range as this is why they go for a different type of weapon. Okay they snipers with them but so do most units.
The new SA80 is a vast improvement on the original version, but its still a rifle I would not like to be issued with. A family friend was part of the design team at Enfield Lock who was given the task "Make it work." His words to me were, "Its the worst piece of crap I have ever worked on in my life."
The main dislikes I dont like about the rifle is:-
(1) Can only be fired right handed. This could cause a problem firing around cover.
In my experience, the L1A1 SLR could and was fired left handed, so was the Lee Enfield and the GPMG. The only weapon that couldnt be fired left handed was the BREN because of the offset sights. Sterlings could be fired left handed, but wasn't recommended. I trained myself to fire my persanally owned FN FAL and Vektor Lm4 to fire off the right and left shoulder
(2) I dont like the posistion of the magazine of the SA80.
I managed far faster mag changes with rifles (such as the L1A1 and M16) where the magazine is in front of the trigger, then with the SA80.
The reasons I heard why the SAS wont use the SA80, "Its rubbish." They opted for a more conventional and reliable rifle.