The FAL is a long beast, and it's simply not as modular or as adaptable as more modern offerings.
If you're only considering the classic L1A1 pattern, yes.
DSA brought the rifle into the present, though. All kinds of configurations, from the classic to accurized DMRs to folding stock carbines, including 9"-13" SBR versions. And there are plenty of accessories, such as side folding adapters to use AR carbine stocks, modular hand guards and rails, top covers, grips, safeties, charging handles, etc.
Not quite the LEGO platform that the AR is, but hardly uncustomizable.
I would have a real hard time choosing between my FAL Para carbine and the .308 AR. AR has the edge in accuracy and is
slightly more ergonomic & intuitive, but the FAL is a wicked rifle in it's own right.
My preference for .308 autoloaders is basically:
1: AR
1: FAL
3: M1A
4: G3/Cetme
5: FNAR
6: SCAR 17
And no, the double 1st place is not a typo.
M1A is a great rifle, but it is distinctively lacking in a few ways compared to the AR or FAL, IMO.
The G3 type rifles have their pros, but they are the harshest recoiling of the group, and not terribly ergonomic. They also destroy brass.
FNAR is an interesting firearm, but not really in the same class as the first 4. Accurate and reliable enough, but the ergos are a little weird and they are quite nose-heavy.
SCAR I just can't stand. Ugly, uncomfortable, thumb battering thing with sub-par accuracy for it's price tag. I know some people like them. And they can have 'em. IMO, FN missed the mark big time with that thing. They should have gone with a modernized FAL like DS Arms did. Only thing that is really needed on the FAL is a better magazine insertion & release design, as the rock-in type are a little slow, and trying to drop a mag quickly with the FAL is a good way to get a sore trigger finger.