Tons of info here in the Semi Auto Section.....
Here's a budget 308 semi auto build thread I did for the hide using Aero M5 receiver set.
https://www.snipershide.com/shooting/forum/...a-build-thread
I also did a 6.5cm to test the Aero M5 receiver set which was lost in the move from Scout back to the Hide. Tack driver. Here's some groups I shot with it with a custom Bartlein 22" 6.5cm barrel.
Build List
22" Keystone Accuracy Bartlein 6.5cm Fluted 5/8-24 muzzle - Rifle Gas (you will want to go +2 gas now)
Aero M5 Upper/Lower
Odin Works Keymod handguard
SLR Sentry 9 AGB
JP LMOS Bolt Carrier
JP High Pressure Enhanced Bolt (headspaced to my custom barrel)
Geissele SD-E
BCM CH
Mapgul PRS
JP Rifle buffer spring and DPMS 308 Rifle Buffer (highly recommend JP SCS now for better brass life)
I built the above gun to test out the Aero M5 receiver set it. It was very nice for how cheap I paid for the set. I have since moved it all over to a MEGA I had waiting after testing the Aero set but accuracy was the same.
Heres some targets on how she shot
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