Aren’t they both .308?
No, most are .223.
The M14 is .308. The AR-15/M16 is 5.56mm (.223).
}:-)4
Ar 10 the new Remington AR 25 Knights AR 25 can be 308 they also can be had in other 308 based ammo 260 243 7mm 08.
Ar 15’s and their clones are normally 223/5.62 But can be had in other cailbers also.
The AR15 platform is generally in 5.56x45Nato (Military .223). There is AR10 that is 7.62x51Nato (military .308). There are kits and custom builds for AR15s that convert it to several other calibers including 6.8Grendel, 9mm Parabelum, 7.62x39Russian...
The AR15 platform is generally in 5.56x45Nato (Military .223). There is AR10 that is 7.62x51Nato (military .308). There are kits and custom builds for AR15s that convert it to several other calibers including 6.8Grendel, 9mm Parabelum, 7.62x39Russian and others...