In an effort to focus on different areas of the AR pistol...

9mm AR pistol  mag adapters

Who makes 9mm mag adapters?

Colt - 2 piece pin in
RRA - uses modified UZI mags
Vm HyTech - bottom loading   -uses un-modified UZI mags
ASA- top drop in - uses modified UZI mags
Oly- ???

Oly uses Sten Mags...

www.ar15.com/forums/topic.html?b=7&f=24&t=268316

-Jason

That's sten mags with a SOCOM block right?
Didn't they also have a proprietary magazine/block combo, where the block was part of the mag?

yup, oly sells the sten mags welded with a block on the sides but the go for about 65 bucks..

There are a few companies who make the Sten block, all are under 100 bucks most are around 65-70ish...  all do the exact same thing. (hold the sten mag in place) so go with the cheap one and you wont even notice.

-Jason

Quoted: yup, oly sells the sten mags welded with a block on the sides but the go for about 65 bucks.. There are a few companies who make the Sten block, all are under 100 bucks most are around 65-70ish...  all do the exact same thing. (hold the sten mag in place) so go with the cheap one and you wont even notice. -Jason

Guy in the EE is selling them for $50 shipped right now.  I bought one and it is quality.

I like the Oly style better then the others (except the pin in Colt).  The others seem to use set screws.  I dont like the idea of having screws puch on my lower receiver to hold a block in.  people have cracked their receivers this way.

I feel sten mags are dirt cheap right now.  They can be found at guns shows for $5 and from tapco for $4.

the ASA is drop in,  if I remember right.

Quoted: the ASA is drop in,  if I remember right.

Yes, they drop in from the top.

I got a VMhytech mag block. It looks and works good, BUT it doesn't accept ALL UZI mags.

I don't mean certain mags don't cycle well.
I mean you litterally can't get the mag into the adapter.
I unerstand hight tollerances and slight fitting.  However, I took sand paper and wood dowel/block to the mag well. I got almos NO improvement. One mag that required a vice and rubber mallet, now only requires both hands to pull the mag out of the block. That with the block out of the gun.
Are the any tricks to "boring out" the mag mag well?
I'm thinking dremmel, but don't have the wand attachment. So it won't reach.