Poll: What Would be Your Next AR15 Caliber?

[Joe13]

I'm one of those that just cant get on board with the .300 black out! I see its advantages in certain applications but I just cant wrap my head around it! Sort of like the old M1 carbine, Love the rifle, hate the round! Sort of a trade off for me, cant really see a good use for it! I wish it were less expensive to have a full size rifle length AR platform, I would love to do one in 7 MM rem mag!

The advantage is that the caliber was designed to maximize power from pistol length AR15's.

The 5.56 was designed for full length rifle barrels.

 

[Captain O]

AR-10, no question. That's enough, isn't it?

 

[osprey]

I got around to hunting with my 300 blackout and took a buck with it this fall. Hard for me not to consider it a useful tool now as I chew on deer chops. Merry Christmas and may Santa put one in your stocking!

 

[CountryGent]

I can't see adding another AR to the battery anytime soon, but if I did:

• Probably an AR-10 style rifle in 7.62mm NATO / .308 Win.
• Maybe a pistol caliber carbine. I've been toying with a suppressed, pistol caliber carbine in 9mm or .45 ACP for a while now. However, as I've already kind of have one (vz61 in 7.65mm) and the utility is limited, I haven't done so. A pistol caliber AR would likely be a decent choice in this area though.

 

[Steve Noble]

.300 BLK, integrally suppressed. (Spikes Tactical is on the consideration list) then 6.5 Grendel. Already have the AR-10!

 

[Capn Jack]

Got no I.D. I have them in .177 pellet, .22lr, .223, 7.62x39, .458S and 12 Ga.
What else do I need?
Sometimes I think a pistol caliber would be nice. Maybe a 9mm.

 

[3MTA3]

My next, and last, AR will be in either .22LR or 9mm for training, but for other purposes this is a pretty informative video by Tiberasaurus Rex who does the Sniper 101 series.

 

[Blackleaf40]

I'm really leaning towards a 300BLK upper with an 8.5" barrel. I actually had one and sold it for some ridiculous reason beyond my current comprehension, and I'd like to suppress it. The benefits of it within 200 yards, especially suppressed with subs, was something I didn't appreciate before. I'm still on the hunt for a magazine fed 50 BMG upper. I have the 458 Socom, 7.62x39, 204 Ruger and the 5.56 cover, but the 25/45 Sharps is looking attractive.

 

[ZigZagZeke]

I would want one in a common pistol caliber that matches my sidearm. Either .45 ACP or 9mm would work. I find that carrying a rifle and a pistol in matching calibers is extremely convenient. I do that now with my .357 Mag revolver and my single shot rolling block rifle. I think .45 ACP would be good because my preferred sidearm is a 1911. On the other hand, I also carry a 9mm, and with all of the various government agencies stocking billions of rounds of 9mm hollow point it might make sense in a SHTF situation to be carrying both a pistol and a rifle that could use "borrowed" ammunition.

 

[IronMonster]

Got no I.D. I have them in .177 pellet, .22lr, .223, 7.62x39, .458S and 12 Ga.
What else do I need?
Sometimes I think a pistol caliber would be nice. Maybe a 9mm.

Wait... 12 ga?

 

[Capn Jack]

Wellll....OK it's an MKA 1919.

So I got a little carried away..

 

[Derek1167]

Just built a .300 Blackout 10.5" pistol and another .223/5.56 rifle. I've got an 80% lower and am debating myself what to do with it. Leaning towards 6.5.

 

[Captain O]

If I could have a true "AR-15" (gas-operated) MSR in a pistol caliber I believe that a 10mm with a threaded muzzle would be in order. I would like to have it with a 16" barrel so that I could use "nuclear" 10mm loads. (Using these for hunting, and hot Underwood Extreme Penetrator loads would make it worth owning and shooting.

Arranging for a pinned on "birdcage" flash hider that won't damage the threads would be nice. The ability to remove said flash hider and install a sound suppressor seems appropriate

 

[Kruel J]

If I could have a true "AR-15" (gas-operated) MSR in a pistol caliber I believe that a 10mm with a threaded muzzle would be in order. I would like to have it with a 16" barrel so that I could use "nuclear" 10mm loads. (Using these for hunting, and hot Underwood Extreme Penetrator loads would make it worth owning and shooting.

Arranging for a pinned on "birdcage" flash hider that won't damage the threads would be nice. The ability to remove said flash hider and install a sound suppressor seems appropriate

Looks like Olympic Arms indeed makes a rifle length 10mm AR. I would definitely research them before buying one as their quality was questionable in the past.

K10 - Pistol Cal 10mm

 

[mjbskwim]

Looks like Olympic Arms indeed makes a rifle length 10mm AR. I would definitely research them before buying one as their quality was questionable in the past.

K10 - Pistol Cal 10mm

I'm not too worried about their rifles but I am worried about their magazines. I would have to run a bunch of ammo thru some mags to ensure they feed flawlessly.

 

[FireArm]

Im currently building an AR-10 in .308 but since I can use the same mags, charging handle, BCG, and scope. im also building a upper in 6.5 creedmore.

 

[Captain O]

Looks like Olympic Arms indeed makes a rifle length 10mm AR. I would definitely research them before buying one as their quality was questionable in the past.

K10 - Pistol Cal 10mm

This is a recoil-operated carbine a true AR-15 type rifle would be gas-operated.