If you were to design a follower that would limit a 20rd mag to 15, and put that in a factory pmag with removable base, would that comply? I see all of the cut down, pinned, epoxied mags that you can't take apart and wonder why you can't just use a follower that is 5 rounds thicker. Should function 100%. And could probably be 3d printed cheaply. Thoughts?

Without pinning the base plate the mag can easily be co verted back to standard capacity

But that would require modifying the magazine or replacing the follower. How is that different than something like the sig 22lr 10rd magazines. You can buy a sig power follower, mag plug, and spring to make it accept 15rds. Would they be illegal if there was a 10rd limit?

 

What is considered easily converted back?

I'm of the same mindset with my XD45 mags.

I took a hard look at them yesterday, in anticipation of needing to reduce their capacity from the current 10 and 13 they hold.

Permanently altering the follower is a problem because both the top and bottom surfaces are "special"

(Top is the feed area and the bottom accepts the top of the mag spring)

However, the flat plastic plate that serves to lock the floorplate to the mag is only fractions of an inch thick.

If a rectangular plastic rod was sliced into inch-long pieces (at the proper angle, of course) and permanently epoxied to the thin plastic plate to "thicken" it up, the mag's capacity would be permanently reduced.

 

Thoughts?

Does it really matter as long as it only holds the required amount?

 

The mag can be 2 feet long but if it only holds 15 whats the problem?

 

Anything can be reversed somehow.

I'm of the same mindset with my XD45 mags.

I took a hard look at them yesterday, in anticipation of needing to reduce their capacity from the current 10 and 13 they hold.

Permanently altering the follower is a problem because both the top and bottom surfaces are "special"

(Top is the feed area and the bottom accepts the top of the mag spring)

However, the flat plastic plate that serves to lock the floorplate to the mag is only fractions of an inch thick.

If a rectangular plastic rod was sliced into inch-long pieces (at the proper angle, of course) and permanently epoxied to the thin plastic plate to "thicken" it up, the mag's capacity would be permanently reduced.

 

Thoughts?

 

How would you put the bottom plate back on

Push the new, thicker (formerly flat) plastic plate (with the small tit) into the mag (against spring tension) then slide the plastic floor plate (with the small hole) onto the metal mag body to lock it all together.

Voila! Permanently reduced capacity.