ive had three m1a and have a scar17
i no longer have any of the m1a
i know lots of folks like the m1a but i find them ungainly very poorly balanced incredibly heavy not very ergonomicly friendly and very difficult to keep accurate over the long haul.
the m1 is very fun to shoot but a pain in the but to load a fresh mag since its got the ak style rocker lock type system for putting in a fresh mag.
the only thing i really liked about the m1 was the sight system its classic ww1/ww2 era vintage.
now the scar 17 is a wonder to shoot if the m1a was fun like girl next door type fun the scar17 is pure porn star fun. extremely accurate and remains so through the barrel lifespan. you dont have a oprod you have to worry about bending with hotter ammo or heavier bullets. it runs everything well from 150grain to 180grain loads. mags are the same price range and slightly more available than m1a mags.
scar17 you get a full monolithic reciever adjustable gas system very very good iron sights with an adjustable range setting on the rear sight that works. the trigger group is protected from dirt and debris even when running suppressed.
the only negative about the scar17 is the horrid triggers. there are two replacement style triggers you can get one from giesselle and one from timney. ive got the giesselle trigger as its more of a direct drop in place. replacing only a few parts.
my scar17 using match grade handloads is a submoa gun up to 300 yards which is as far as ive shot it.
this is a pic from sighting in with a 4x32 acog. using 168grain sierra smk. the top hole was the final adjustment and is a 3 shot group. the bottom two holes are single shots each in between adjustments to bring the optic up to final zero
between the M1a and scar17 its absolutely no contest.
scar17 weighs in at the same weight factor as most ar15...