9/30 Pmag

[MissiontoMars]

https://www.turners.com/magpul/magpul-pmag-gen-m2-9/30-pinned-735610

[tabascoz28]

NY technically had a limit on their pistols to 7 until Cuomo overturned it. But in this case, I think Turners had somebody who didn't know what they were doing and mistakenly made them 9 instead of 10. It's easy to measure wrong when you're doing these by hand.

[ar15barrels]

Some 10/30's would actually accept 11 if you push hard so it's certainly safer from a liability viewpoint to set them to 9 so that if someone pushes hard, they only get 10 into the mag.

Pushing that last round into the mag so it's over-filled causes feeding problems anyways so it's not really helpful.
You need enough room for the rounds to move up and down in the mag by about 1/4" to be able to insert the mag under a closed bolt carrier or slide.

[audiophil2]

pinning on that side allows an additional round in when pinned to 10. i pin on the back spine and always get 10 with room to insert on closed bolt. i also use smaller black rivets from a CA company instead of those ugly home depot ones.

[mossy]

Pinning to 9 prevents loading 11.

[ar15barrels]

i pin on the back spine and always get 10 with room to insert on closed bolt.

10 rounds with room to insert on a closed bolt often means you can push an 11th round into the mag.
The law only cares if you can get the 11th round into the mag.
The law does not care if the mag would actually function with that 11th round.
The law does not care if the mag would fit into the gun with that 11th round or not.

[SkyHawk]

Pinning to 9 prevents loading 11.

Yes. It is safest especially with polymer feed lips.

The stack/stagger is just too wide for .223 AR style, and the case is small, and that means there is very little margin for error especially if you want any slack to insert a maxed out mag against a closed bolt.

If you really try you can force an 11th round into a factory short body 10rd Pmag. How are we to win at this compliance game, even if we try in good faith?

And so, if you worry about over zealous prosecutors - you go with 9rd mags, because someone will find a way to cram in a 10th but the 11th will be a no-go.

[beanz2]

How does Magpul do it so it cannot accept 11 rounds while it can be inserted when full with the bolt forward?

https://magpul.com/pmag-10-30-ar-m4-gen-m3.html?mp_global_color=118

[SkyHawk]

How does Magpul do it so it cannot accept 11 rounds while it can be inserted when full with the bolt forward?

https://magpul.com/pmag-10-30-ar-m4-gen-m3.html?mp_global_color=118

Do you have one and have you tried to force in an 11th round? Because like I said, you can force in an 11th round in their standard 10rd mags. It would not surprise me that you could do the same to their 10/30 mags.

[beanz2]

Do you have one and have you tried to force in an 11th round? Because like I said, you can force in an 11th round in their standard 10rd mags. It would not surprise me that you could do the same to their 10/30 mags.

No, I have no need for 10 round mags anymore. Are the standard 10 round mags available for sale in CA? I wonder if that can be used as defense in case you are charged for buying large cap magazine..

[ysr_racer]

My stereo goes to 11.

[audiophil2]

10 rounds with room to insert on a closed bolt often means you can push an 11th round into the mag.
The law only cares if you can get the 11th round into the mag.
The law does not care if the mag would actually function with that 11th round.
The law does not care if the mag would fit into the gun with that 11th round or not.

Not if you do it right. 223 is such a small diameter it is very hard to get it to hold only 10 and not allow the 11th. But if oyu pin on the spine you get a lot more contact area against the rim. Pinning in the front allows the rear to tilt downward because oyu are pinning to stop the extremely small bullet tip diameter and that causes the cartridge to shift.

Most 223 mags cannot be pinned in the spine due to the spring catching on the rivet. Pmags can be done. Plus I use rivets sized exactly to only touch the follower. Home depot won't have those rivets. I buy my rivets in 500 or 1000 count bags.

I test every mag I rivet. My personal collection is full of defects that held 11. I just call those mags with weep holes.

[ar15barrels]

The dirty little secret is that they have not done it.

How does Magpul do it so it cannot accept 11 rounds while it can be inserted when full with the bolt forward?

https://magpul.com/pmag-10-30-ar-m4-...obal_color=118

[audiophil2]

How does Magpul do it so it cannot accept 11 rounds while it can be inserted when full with the bolt forward?

https://magpul.com/pmag-10-30-ar-m4-gen-m3.html?mp_global_color=118

wow. they spent a lot of money to do something a 3cent rivet does so much better. and allows to clean the mag.

[ar15barrels]

wow. they spent a lot of money to do something a 3cent rivet does so much better. and allows to clean the mag.

Spending that money justifies their "attempt" to be as legal as they can.
They can say that people are "mis-using" their product when they force the 11th round into the mag and that the 11th round causes the mag to become non-functional which is indeed true.