Drum Magazines

[smdub]

How did you get 45ACP in the Suomi drums? (Am I an idot for not checking to see if there is enough wiggle room in there?)

I've built a drum for the Reising that uses the Colt drum like smec_289 shows but its a PITA. Since it doesn't wind back, you can't have a 'pusher' of linked dummy rounds to go up the tower. You have to insert groups of dummy rounds down near the center, take them out of the top when done and put them back in the center when reloading. It will be a PITA compared to a Suomi mag.

 

[skiboatsp]

There is not space

How did you get 45ACP in the Suomi drums? (Am I an idot for not checking to see if there is enough wiggle room in there?)

I've built a drum for the Reising that uses the Colt drum like smec_289 shows but its a PITA. Since it doesn't wind back, you can't have a 'pusher' of linked dummy rounds to go up the tower. You have to insert groups of dummy rounds down near the center, take them out of the top when done and put them back in the center when reloading. It will be a PITA compared to a Suomi mag.

There is not enough room in a stock suomi or ppsh drum for 45 acp.

 

[skiboatsp]

There is not space

There is not enough room in a stock suomi or ppsh drum for 45 acp.

But it can be done.

 

[Gaujo]

Does anyone know if there's plans to have a production run or ever has been a production run for magwell drum feed magazines for the Mac family? I know Lage has the uppers for the Suomi drums but why not any magazines for the standard Mac’s magwell ?

They existed but are about as much as a drum upper from Lage now as they are rare.

 

[mak91]

Does anyone know if there's plans to have a production run or ever has been a production run for magwell drum feed magazines for the Mac family? I know Lage has the uppers for the Suomi drums but why not any magazines for the standard Mac’s magwell ?

Its really not a good design. With the taller mag well of the macs you have a lot of filler rounds that take away from the true mag capacity. For a m11/9 you'll have about 20 filler rounds to make up the tower length so a 70 round drum now is down to about 50 rounds of fire-able ammo. A stick shockwave 50 round mag has the same capacity and is much cheaper.

 

[Garrett]

Its really not a good design. With the taller mag well of the macs you have a lot of filler rounds that take away from the true mag capacity. For a m11/9 you'll have about 20 filler rounds to make up the tower length so a 70 round drum now is down to about 50 rounds of fire-able ammo. A stick shockwave 50 round mag has the same capacity and is much cheaper.

Not correct.

You have the same number of usable rounds as what you get in an unmodified drum. The filler rounds just make up for the additional distance the cartridges have to travel up the tower.

For example, an unmodified Suomi drum holds 71 rounds. A Suomi with an M11 feed tower will have 71 rounds plus ~20 filler rounds. When you are done shooting a full mag, you will have fired 71 rounds and will have ~20 rounds remaining in the feed tower.

 

[Galil#1]

So Gentlemen... Where/Who makes and sales drum mags for the Reising 50/55 SMG... Thompson .45 drum based? Thanks

 

[mak91]

Not correct.

You have the same number of usable rounds as what you get in an unmodified drum. The filler rounds just make up for the additional distance the cartridges have to travel up the tower.

For example, an unmodified Suomi drum holds 71 rounds. A Suomi with an M11 feed tower will have 71 rounds plus ~20 filler rounds. When you are done shooting a full mag, you will have fired 71 rounds and will have ~20 rounds remaining in the feed tower.

You are correct Garret, I think I am still dealing with some covid brain fog. The drums that have the mag body attached to the drum should have the full round count available. I've been working on a 3d printed am180 drum and had the bb adapter on my mind when I posted. In its case the rounds in the mag body are just filler and drop the available round count accordingly.

 

[A&S Conversions]

So Gentlemen... Where/Who makes and sales drum mags for the Reising 50/55 SMG... Thompson .45 drum based? Thanks

There was a guy doing tweaks and tower installs on Thompson drums by the name of Merle Bitikofer. I don't know if he still does this, but it is a place to start.

Scott

ETA I tried calling but cell # was not active. I guess you will have to try https://www.doubletapfirearmspa.com/product/brp-stemple-45acp-grease-gun-50-rd-drum/

 

[Galil#1]

^^^^^^^^^^^^^^^^^^^^^^

Thank you Scott.

O seen on other MG site, he passed away earlier this year. Rest in Peace Mr. Bitikofer.

 

[A&S Conversions]

Thank you for the update. Sorry to hear of his passing.

 

[Galil#1]

BRP/Stemple 45acp grease gun 50 rd drum | Double Tap Firearms

^^^^^^^^^^^^^^^^
Yes super nice guy, all positive feedback, has anyone purchased one of his Reising drum magazines? Thanks again!

 

[skiboatsp]

They existed but are about as much as a drum upper from Lage now as they are rare.

Are we talking 9mm or 45acp?

 

[skiboatsp]

I built this years ago but have just started using it. Much easier than old vector style.

 

[Galil#1]

^^^^^^^^^^^^^^^^^^^^^^^^

Ski what is that? IF for a GG, how many .45 rds. does it hold? Looks real neat!

 

[skiboatsp]

^^^^^^^^^^^^^^^^^^^^^^^^

Ski what is that? IF for a GG, how many .45 rds. does it hold? Looks real neat!

PPSH 41 heavily modified. 50-52 Thanks

 

[Galil#1]

Again Very Kool!

 

[19Steve67]

When I see what obviously highly skilled people like skiboatsp have created ( like the drum pictured above
for the PPSH 41 ) I ADMIRE their mechanical abilities and I am envious of their abilities at the same time.
IMPRESSIVE work skiboatap!!!

 

[skiboatsp]

When I see what obviously highly skilled people like skiboatsp have created ( like the drum pictured above
for the PPSH 41 ) I ADMIRE their mechanical abilities and I am envious of their abilities at the same time.
IMPRESSIVE work skiboatap!!!

Thank you very much. I have to say everyone has their own strengths and weaknesses. I am blessed with these.

 

[19Steve67]

And from the pictures you have posted you are a Master Craftsman!!