A Magic Trick: Thermolds into P-Mags

[QuarterBoreGunner]

My close personal friend, the famous magician David Copperfield, was asking me a hypothetical question the other day. He said, "Hey Chris, so if I have legally owned pre-2000 30 round Thermold AR magazines that are a little worn AND I'd really like to try out those fancy new P-Mags all the cool kids are talking about, would it be legal to find, somewhere, P-Mag repair kits. Purchase the same number of said kits to match the number of old and busted Thermold magazines. Then "repair" my Thermolds into nifty keen P-Mags.
I'd end up with the same number of hi-cap magazines, just different manufacturer. Then I'd dispose of the old and busted Thermolds, or maybe cut the bodies and keep them around for proof of previous ownership."
"What do you think Chris?"
"Gosh David Copperfield, that would be a great trick! I'm just not the right person to ask about legalities... but I know WHERE to ask."

I think famous magician David Copperfield is on solid legal ground here, but I'd hate to give him bad advice.

EDIT: Oops. This was supposed to go into "General" Sorry 'bout that.

[mxpatriot51]

Don't see it being any different then replacing a regular mag body; just make sure to use at least one part from the thermold magazine.

[rksimple]

Don't see it being any different then replacing a regular mag body; just make sure to use at least one part from the thermold magazine.

Technically, you can replace EVERY part on an old mag.

[QuarterBoreGunner]

Technically, you can replace EVERY part on an old mag.

This was my thought also - and is relevant to David Copperfield's question since I believe that the Thermolds don't share any common parts with any other 30 round magazines; not even the springs.

[rksimple]

This was my thought also - and is relevant to David Copperfield's question since I believe that the Thermolds don't share any common parts with any other 30 round magazines; not even the springs.

And providing after all the parts are replaced, it works in the same rifle, sounds good to go, right? I think David will be fine. He may want to wait, though, until some of the more legal types give some advice with more weight than mine.

[bwiese]

David Copperfield is well-informed.

You are protected by the Alison letter about mag fixups.

Just don't build new mags - you're repairing the old ones.

[chiefcrash]

This was my thought also - and is relevant to David Copperfield's question since I believe that the Thermolds don't share any common parts with any other 30 round magazines; not even the springs.

this one sounds a little too fishy to me...

[QuarterBoreGunner]

this one sounds a little too fishy to me...

Why? I mean I've never compared the springs; they may be the exact same for the Thermolds, mil-spec, and, or P-Mags. I've just never done a direct contrast/compare.
And that's the only part that *would* be interchangeable with any other mags; certainly not the bodies, floorplates or followers.

[chiefcrash]

Why? I mean I've never compared the springs; they may be the exact same for the Thermolds, mil-spec, and, or P-Mags. I've just never done a direct contrast/compare.
And that's the only part that *would* be interchangeable with any other mags; certainly not the bodies, floorplates or followers.

if the springs would work in both, then i'd say ok. But if no single part from a thermold would work in a P-Mag, i don't see how you could "repair" a thermold into a P-Mag...

[QuarterBoreGunner]

I will let my close personal friend, famous magician David Copperfield, know this.

[bohoki]

i have a thermold mini 14 mag date code 86 the spring was weak i thought i was doomed i called up pro-mag and they sent me out a spring for freeef

now it works flawless before i would have nosedive issues

[dondo]

You tell your buddy, the famous magician David Copperfield, he blew it with Claudia Schiffer. He looks like Bob Saggets brother.

[QuarterBoreGunner]

Yes. Yes he does.

Back on topic; where could I tell him to find these P-Mag repair kits; it doesn't look like MagPul has them in kit form.

EDIT: Never mind; 44MAG.com has them; and I've dealt with them before with some M1A mag repair kits. I'll famous magician David Copperfield know.
Thanks all!