"Mauser Bump"?

jonnyc · 12-17-2008, 11:18 AM

What exactly is the "Mauser Bump" I have read about? Can someone post a pic?
Thanks.

zinfull · 12-17-2008, 11:55 AM

The bump is a reinforcement at the rear of the barrel group.

1936 no bump 1937 bump.

Jerry

Edward Tinker · 12-17-2008, 12:05 PM

Also see FAQ here (there are TWO FAQ's, this is the newer one) http://forum.lugerforum.com/forumdisplay.php?f=133

Ed

Sieger · 12-19-2008, 08:57 PM

Hi:

That little Mauser improvements was (as I believe and have read) there to keep the toggel link pin from falling out or sticking on the frame upon firing.

Also, the "bump" was an african american dance popular in the mid 1970, for those of you in school at the time!

alvin · 12-19-2008, 09:33 PM

I read T&J Simson book....so the toggle pin could fall out from Simson if I remembered right. Not convinient to access DWM sample at this moment.... I assume no such an issue on DWM (?) How could a big problem like this go more than 30 years without being fixed and waiting Mauser to fix it in mid 1930s? Or were there something else changed post WWI that caused this "new" problem?

alvin · 12-20-2008, 09:53 PM

Just tried on a DWM 1920. There is no chance the pin could fall out... it's marginal though, depends on very precise machining.

Here is the pix, the receiver (barrel extension) reached its rearest position.

12-17-2008, 11:18 AM	#1
jonnyc User Join Date: Dec 2008 Posts: 425 Thanks: 2 Thanked 46 Times in 34 Posts	"Mauser Bump"? What exactly is the "Mauser Bump" I have read about? Can someone post a pic? Thanks.

12-17-2008, 11:55 AM	#2
zinfull Lifer Lifetime Forum Patron Join Date: Dec 2004 Location: Sonoma County CA Posts: 240 Thanks: 4 Thanked 32 Times in 15 Posts	The bump is a reinforcement at the rear of the barrel group. 1936 no bump 1937 bump. Jerry Attached Thumbnails

12-17-2008, 12:05 PM	#3
Edward Tinker Super Moderator Eternal Lifer LugerForum Patron Join Date: Jun 2002 Location: North of Spokane, WA Posts: 15,909 Thanks: 1,986 Thanked 4,500 Times in 2,076 Posts	Also see FAQ here (there are TWO FAQ's, this is the newer one) http://forum.lugerforum.com/forumdisplay.php?f=133 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

12-19-2008, 08:57 PM	#4
Sieger User Join Date: Jul 2003 Location: New York, NY Posts: 1,575 Thanks: 2,124 Thanked 400 Times in 249 Posts	Hi: That little Mauser improvements was (as I believe and have read) there to keep the toggel link pin from falling out or sticking on the frame upon firing. Also, the "bump" was an african american dance popular in the mid 1970, for those of you in school at the time! Last edited by Sieger; 12-20-2008 at 06:23 PM.

12-20-2008, 09:53 PM	#6
alvin User Join Date: Jul 2007 Location: US Posts: 3,843 Thanks: 132 Thanked 729 Times in 438 Posts	Just tried on a DWM 1920. There is no chance the pin could fall out... it's marginal though, depends on very precise machining. Here is the pix, the receiver (barrel extension) reached its rearest position. Attached Thumbnails

12-19-2008, 09:33 PM	#5
alvin User Join Date: Jul 2007 Location: US Posts: 3,843 Thanks: 132 Thanked 729 Times in 438 Posts	I read T&J Simson book....so the toggle pin could fall out from Simson if I remembered right. Not convinient to access DWM sample at this moment.... I assume no such an issue on DWM (?) How could a big problem like this go more than 30 years without being fixed and waiting Mauser to fix it in mid 1930s? Or were there something else changed post WWI that caused this "new" problem?