30 Luger to 9mm Luger

coverk · 08-31-2011, 02:55 PM

I recently aquired an Alphabet commercial in 30 Luger. If I am able to find a 9mm upper how likely is it to fit on my Commercial frame?

I am aware of a 9mm upper unit that is being sold.

TIA

DavidJayUden · 08-31-2011, 03:00 PM

As long as it is all P-08 there should be no issues.
I once bought a .30 commercial Luger AND a WW1 Navy top end only. Fit right on and became my #1 shooter. So in my experience they should fit right together, but lets see what others say.
dju

rhuff · 08-31-2011, 05:52 PM

I own a 1920 Alphabet Luger with the short bbl. in 30Luger, and was able to locate and purchase, a 1940 receiver that had a new 6in 9mm bbl. attached. I had to have it head spaced to my breachblock, but it fits the commercial frame and works. I am still playing with springs, mags, ammo, etc. in an attempt to get both calibers to perform 100%. I may never make it, but I am a persistent soul, and a handloader, which I think will help a bit.

Edward Tinker · 08-31-2011, 06:59 PM

technically the springs are the only things that need adjusting, but otherwise they are interchangeable.

Ed

08-31-2011, 06:59 PM	#4
Edward Tinker Super Moderator Eternal Lifer LugerForum Patron Join Date: Jun 2002 Location: North of Spokane, WA Posts: 15,966 Thanks: 2,066 Thanked 4,595 Times in 2,116 Posts	technically the springs are the only things that need adjusting, but otherwise they are interchangeable. Ed __________________ Edward Tinker ************ Co-Author of Police Lugers - Co-Author of Simson Lugers Author of Veteran Bring Backs Vol I, Vol II, Vol III and Vol IV

08-31-2011, 02:55 PM	#1
coverk User Join Date: Aug 2011 Location: Central Wisconsin Posts: 34 Thanks: 4 Thanked 5 Times in 5 Posts	30 Luger to 9mm Luger I recently aquired an Alphabet commercial in 30 Luger. If I am able to find a 9mm upper how likely is it to fit on my Commercial frame? I am aware of a 9mm upper unit that is being sold. TIA

08-31-2011, 03:00 PM	#2
DavidJayUden Patron LugerForum Patron Join Date: Nov 2008 Posts: 4,047 Thanks: 578 Thanked 1,414 Times in 887 Posts	As long as it is all P-08 there should be no issues. I once bought a .30 commercial Luger AND a WW1 Navy top end only. Fit right on and became my #1 shooter. So in my experience they should fit right together, but lets see what others say. dju

08-31-2011, 05:52 PM	#3
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,308 Thanks: 2,737 Thanked 993 Times in 729 Posts	I own a 1920 Alphabet Luger with the short bbl. in 30Luger, and was able to locate and purchase, a 1940 receiver that had a new 6in 9mm bbl. attached. I had to have it head spaced to my breachblock, but it fits the commercial frame and works. I am still playing with springs, mags, ammo, etc. in an attempt to get both calibers to perform 100%. I may never make it, but I am a persistent soul, and a handloader, which I think will help a bit.