.308 AR-15?

[Forestgnome]

Anyone make a .308 that's compatible with most AR-15 parts? Seems to me you could build one that uses the LPK, bolt carrier, buffer tube, handguards, etc. I own AR's but never had an AR-10. I love .308 for accuracy and power.

[chansen49]

Magwell is way bigger on a 308. The lower wont work, They do share quite a few parts but Different buffer, bcg etc..

[ar15barrels]

You can't use the same bolt carrier.

[VytamenC Tactical]

yes you can use some parts from ar15's for some ar10's. but remember an ar10 IS NOT MIL SPEC. like the ar15 is

[noyaba]

what parts?

[2Cute2Shoot]

So if you want to make your AR15 so it can shoot something really big, what is the biggest bullet it will easily take? I may go hunting someday! (yeah, right)

[Noobert]

You can drop on a bolt action (or some semi small enough, or with side loading) anything <= .50BMG

[C.G.]

So if you want to make your AR15 so it can shoot something really big, what is the biggest bullet it will easily take? I may go hunting someday! (yeah, right)

Largest would be .50 Beowulf, but there are smaller calibers available, i. e. 6.5 Grendel, 6.8 SPC, .458 Socom, .450 Bushmaster.

[Forestgnome]

Notice I didn't mention the lower or upper? I know I'ld have to mill those. As for the AR-10 bolt, the pics are interesting (thanks), but I still don't see why you couldn't use the AR-15 carrier. Isn't it used in the Beowulf? That's got a larger base then the .308. What about the Stoner? Does that use aR-15 parts, or are they mostly unique?

[turinreza]

So if you want to make your AR15 so it can shoot something really big, what is the biggest bullet it will easily take? I may go hunting someday! (yeah, right)

you need a different lower for 308 which requires a whole other AR.

for your ar-15 lower.. you can do 6.8 SPC or 6.5 Grendel upper
both of which require their own magazines

[C.G.]

Notice I didn't mention the lower or upper? I know I'ld have to mill those. As for the AR-10 bolt, the pics are interesting (thanks), but I still don't see why you couldn't use the AR-15 carrier. Isn't it used in the Beowulf? That's got a larger base then the .308. What about the Stoner? Does that use aR-15 parts, or are they mostly unique?

You could not mill an AR-15 lower to fit a .308 round magazine and my guess is that the AR-15 upper is way too short to house a .308 cartridge. It is not the base, but the length of the cartridge that matters.

[C.G.]

BTW, MGI tried to bring on a lower with exchangeable modular mag wells to include .308. They never succeeded with the .308.

[ar15barrels]

Notice I didn't mention the lower or upper? I know I'ld have to mill those. As for the AR-10 bolt, the pics are interesting (thanks), but I still don't see why you couldn't use the AR-15 carrier. Isn't it used in the Beowulf? That's got a larger base then the .308. What about the Stoner? Does that use aR-15 parts, or are they mostly unique?

The AR-10 bolt won't fit in an AR-15 carrier.
The beowulf base is the same as a 7.62x39 which is smaller than a 308.
The stoner 63 uses very very very different parts.

[Forestgnome]

.308's rim is .0278 larger than the Beowulf. Again, I'm not trying to put AR-10 parts in anything. I'm just figuring on building a .308 AR with as many stock AR-15 parts as possible. Just wanted to know if someone out ther has done it already, and if not why. Guess I havn't been clear on my intentions.

[Forestgnome]

You could not mill an AR-15 lower to fit a .308 round magazine and my guess is that the AR-15 upper is way too short to house a .308 cartridge. It is not the base, but the length of the cartridge that matters.

When i say mill, I mean like this.