Keywords: buy ar10
Description: Are there any good reasons to buy a complete Armalite AR10 rifle rather than buying an Armalite AR10 upper and lower separately and putting them...
Are there any good reasons to buy a complete Armalite AR10 rifle rather than buying an Armalite AR10 upper and lower separately and putting them together? Do complete rifles have matching serial numbers or something? Or are you just paying several hundred bucks more for a magazine, a case and a cleaning kit?
I think you have it backwards. 308 Winchester ammunition can be loaded to higher pressures than 7.62 NATO. There is a good reason for that (this is were I speculate). 308 Win is designed for bolt rifles which can take the higher pressure round, whereas the 7.62 NATO round is spec-ed to server a wide range of bolt, select fire and full auto firearms. With some exceptions (specialty ammo), these rounds are loaded to 50Kpsi.
I am not familiar with the AR-10, LR-308 and SR25 platforms. I encourage you to investigate carefully what your auto-loader can safely repeatedly fire.
In short, with 7.62 NATO vs 308Win we have the reverse scenario of what we see with 5.56 NATO and 223REM.