.30 carbine Upper for AR15

[Felixthacat]

My college buddy and I made a .30 carbine upper. We are still tweaking the extractor to accommodate brass, steel, Mil-surp. Etc. Types of ammunition.

We created a steel insert for an ASC AR magazine.

How much interest is there out here for something like that?

In a nutshell, a set comprising of a .30 carbine upper and 10 round .30 carbine AR magazine.

[P5Ret]

Probably not much given the current costs and availability of .30 Carbine ammo, compared to 5.56.

[FeuerFrei]

My college buddy and I made a .30 carbine upper. We are still tweaking the extractor to accommodate brass, steel, Mil-surp. Etc. Types of ammunition.

We created a steel insert for an ASC AR magazine.

How much interest is there out here for something like that?

In a nutshell, a set comprising of a .30 carbine upper and 10 round .30 carbine AR magazine.

Like a 357 magnum AR? I like the concept.

Your R&D may lead you to branch off to other designs that the shooting public would buy.

See what they did here...

https://www.trimports.com/product/xt3-tactical-410-semi-auto/

Now imagine a 45LC version. Hmmm? Short range pig swatter?

Carry on and maybe post your progress if possible.

[Flintlock Tom]

Dibs!
I'm interested; I sold my last M1 Carbine, but still have lots of ammo, brass and reloading dies.
An AR15 upper for .30 Carbine would rock.

Did you chamber a .30 barrel blank or did you find a finished barrel somewhere?

[12pewpew]

Not super familiar with the 30 cal round but what would be the advantage over running 300 bo?

[alpha_romeo_XV]

If you wanted to shoot a 110g bullet at 1800fps from an AR, I go with a 350Legend or a 357sig upper. And with the 357sig you could have pistol using the same caliber and mags. For a reloader uncommon ammo costs no more to load than the common ammos and at much less cost than uncommon commercial ammo.

[ar15barrels]

Not super familiar with the 30 cal round but what would be the advantage over running 300 bo?

The only advantage would be if you had a bunch of 30 carbine ammo to use up and no 30 carbine gun to shoot it in.
300 blackout will do everything that a 30carbine does if you slow the blackout down a bunch.
The 30 carbine is a wimpy 300 blackout.

[therealnickb]

^ that first part sums up my thinking.

Since 30 carbine isn’t cheap or available in mass as the first replies mentioned, I seriously see no point to an upper for it.

[Duck Killer]

It has been done before. It used carbine mags if I remember right.

[Rob454]

The only advantage would be if you had a bunch of 30 carbine ammo to use up and no 30 carbine gun to shoot it in.
300 blackout will do everything that a 30carbine does if you slow the blackout down a bunch.
The 30 carbine is a wimpy 300 blackout.

[therealnickb]

ammo for $200. (1200 rounds). Mind you this was at the height of the ammo and gun shortage where there was nothing for sale.

I would do a 30 carbine simply as a fun plinking platform. If the upper was reasonable price point I would buy one.

[ar15barrels]

It has been done before.
It used carbine mags if I remember right.

You typically glue a carbine mag inside of an old AR-15 mag body with worn out feedlips that you cut away to let the steel carbine mag feed lips stick up to the proper feeding height.

[naz]

Don’t forget the bayonet mount for 30 carbine upper. You might need to use the rifle as a spear to finish off whatever you are shooting at

[TMB 1]

If I had a bunch of 30 Carbine ammo and no M1 Carbine, think I would just get a 30 carbine Ruger Blackhawk.

300 Blackout is the way to go with AR.

[deadcoyote]

There was a custom order item some years back where they sold 7.62x25 uppers with a grip of converted ppsh 35 round mags. At that time I said to myself “why can’t someone do this with .30 carbine”. Conversely, I’d want a mag wel block like the colt pattern 9mm ar’s to use normal m1 mags