Why the bend in 30rd AR15 mags?

[sxyglock17]

Why is there a bend in 30 round AR15 mags? Is it anything functional?

I'm getting my 30rd 7615P magazine manufactured. Should I put a bend in it? It's way easier just to make a straight mag.

Any ideas would be great.

Thanks!

 

[spi]

Yes there is a reason for it. The 5.56 casing has a marginal taper to it, and of course the shoulder to neck diameter is a very large drop off.

The "kink" or bend in the AR15 mag is to account for that, so that the round presents to the chamber "nose up". If it was just a straight bodied mag, the wider bases would cause the 5.56 mm to present "nose down" to the chamber, which = jams or not feeding at all.

The bend or kink in modern AR-15 mags is a manufacturing convenience, as is illustrated by other 5.56 mags for different guns around the world.

The idea feed arc for any ammunition device is of course a smooth arc, but the bend in AR15 mags is mechanically enough to produce the same amount.

 

[sxyglock17]

Thanks for the info!

 

[ricka2]

the 30 round mags will increase the demand for non restricted black rifles that accept ar mags , m96, hk sl8 , or the xcr ?? I would love to take a m96 with a 30 round mag out to a gravel pit .

 

[TSE JR]

the 30 round mags will increase the demand for non restricted black rifles that accept ar mags , m96, hk sl8 , or the xcr ?? I would love to take a m96 with a 30 round mag out to a gravel pit .

I don't see how a remington 30rd mag would help you get around the semi-auto, centre-fire, 5rd magazine capacity limit?

JR

 

[sxyglock17]

It's a brand new, made from scratch, magazine "designed for the Remington 7615P pump action rifle". Not semi, no limit

 

[ancorp]

Carabines firing pistol rounds using magazines from a handgun (Beretta Storm for example) can use 10 round mags, since the mags are restricted by capacity to whatever the law requires for the original gun. Beretta 92 for example is limited to 10 rounds, since its a centerfire semiautomatic pistol, but the magazine can be used wherever it fits with the same 10 round limit. A factory Storm magazine is limited to 5 rounds, since it was manufactured for the carabine, it is limited to 5 rounds, although both the 10 round pistol mags and the 5 round carabine mags are completely interchangable. Stupid huh

So, a pump action centerfire is not limited to any mag capacity, it just happens to be so convenient that it uses standard AR mags. If one was to make one from scratch, labeled and manufactored for the pump action, it will have no limit of round capacity, or the firearm it is used in (even if its a semi automatic AR).

I personnally appreciate sxyglock17's work here, bringing the best stuff possible into Canada on his own (P90, FN2000 anyone? ), I sure hope it works out with those mags, and perhaps you could see your way into making a 100 round betaC mag?

Cheers buddy!
Alex

 

[CanAm]

I believe Larry from c-products once said the tooling for a new mag design costs in the region of $250k for dies alone. (ref: AR15.com thread on their new 7.62x39 mag)

 

[nemesys]

holy crap

 

[esquif]

yes but we dont need to be able to produces 100 000 a day at less then 5 buck each. each mag can be work on by hand and sell for 60 to 80 buck. no need for 250k dies

BTW 20 rnd AR mag dont need the curve

 

[CanAm]

You are still going to be performing a multi-stage press operation, and you will need dies for that, high production rate or not.

 

[sunray]

They're bent to reduce the height a troopie has to be when shooting prone.

 

[johan]

It's a brand new, made from scratch, magazine "designed for the Remington 7615P pump action rifle". Not semi, no limit

I would like to obtain some mags for a Remington 7615P pump action rifle.

 

[spi]

You are still going to be performing a multi-stage press operation, and you will need dies for that, high production rate or not.

It can be done very cheaply if you are running your own shop and that is all you are doing. Under 5k for sure.

 

[Jeremy]

ditto on that holy crap lol. 250k for some dies seems rather steep.

 

[prosper]

With a machine shop could do it for a LOT cheaper. Would take a lot more steps, and time, but it's do-able. Hell, a dude could probably get by with a simple finger brake, some time, and a spot welder

 

[Scarecrow]

Why the need for new dies? Just get a punch to put remington blah blah on it.

 

[ancorp]

Supposedely has to be original, not a relabel...

Cheers,
Alex

 

[cancer]

Why the need for new dies? Just get a punch to put remington blah blah on it.

If you're trying to accomplish the near impossible, you're better off doing things properly from the get go.

Also, someone beat me to the "20 rd mags don't need kinks" comment.

 

[Armedsask]

I believe Larry from c-products once said the tooling for a new mag design costs in the region of $250k for dies alone. (ref: AR15.com thread on their new 7.62x39 mag)

My guess is this is for multiple dies. Plus they would be high quality to last for a long time.

We could get by with something simple. My plan once i'm in the machine shop is to make a single shot .223 rifle that takes it's own 30 round magazine. The mag will just so happen to fit in my AR180B.

If Sxyglock can't make this work with the 7615P, it would probably be easier to get it through if you have a single shot rifle who's name you can stamp on the mag.