a few tips I found posted to help improve M1A1 accuracy
Amazon.com: M14 GAS SYSTEM TWEAKS AND TIPS: An accurizing experience: 9798753689849: SmokyBaer: Books
www.amazon.com
What does it take to turn a rack grade M1A into a match rifle. Our Master Gunsmith explores this process using information from an old Army Marksmanship Unit manual on the M14.
www.freedomforgearmory.com
The M14 owner's guide and match conditioning instructions [Duff, Scott A] on Amazon.com. *FREE* shipping on qualifying offers. The M14 owner's guide and match conditioning instructions
www.amazon.com
#1 your flash hider is already reamed.
#2 you have a NM front site.
#3 Unitized gas cylinder???
#3a Clearance the front furrel (optional) if there is contact.
#3b Shim G/C. (optional)
#3c Float the handguard. (unitized G/C needed)
#4 trigger job, your rifle is a loaded and should have a good trigger from the factory.
#5 NM rear site, your rifle is a loaded and should have a modified std rear site with a ball and detent spring giving you 1/2 min windage adj. a NM hooded(looks like a can) rear aperture will need to be fitted to give you 1/2 min elevation adj. So in a nutshell your rear site is 1/2 way finished.
#6 A good fitting stock will serve your needs for a while when the trigger group lockup(draw pressures) starts getting soft, it should be bedded.
Thats about the cheapest way to go, and most of the work you can handle.
BTW, if your looking for a full size battle rifle, with the reach and punch to decisively win battle's out to well over 600 yards,
with a long and well documented history of winning many conflicts, and if you don't like the M14/M1a1 rifle design,
most of the free world/ NATO selected varia's versions of the FAL, as their preferred, 308 combat rifle,
think CONGO,FALKLANDS , most cold war NATO armies ETC.
DSArms SA58 FAL 21" Belgium Style FALO Heavy Barrel 7.62x51mm Rifle - 50.41 Configuration - DS Arms
dsarms.com
heres one I have my eyes on,