I.G. Mod. 71/84 German Mauser
(including disassembly instructions link below)

71-84M01.jpg
71-84-01.jpg

GENERALLY:  The I.G.Mod.71/84, Germany's first infantry repeating rifle, is a further evolution of Paul Mauser's first successful military rifle, the I.G.Mod.71. German Mauser.  Taking advantage of critical lessons learned from the Turks at the battles of Plevna in 1877, (where the Turks, armed in important part with M1866 Winchester repeating rifles soundly defeated the numerically superior Russians armed with Krnka and Berdan II single shot rifles) the I.G.Mod.71/84 is an I.G.Mod.71 with a tubular magazine (itself a derivation of the Winchester system), a Mauser designed lifting mechanism similar to the Kropatchek design and improved rear sight.  To more fully understand the development of this rifle please review the notes at:  I.G. Mod 71 Germany Mauser.

The most significant improvement being the addition of an 8 round tubular magazine in the forestock loaded singly from the top with the bolt open.  Succeeding rounds are carried to the chamber by an elevator which pivots at the back, similarly to the Kropatcheks but quite unlike the Swiss Vetterli repeater.   There is a magazine cut-off lever on the left side so that the rifle may be used in single shot mode.   The I.G.Mod.71/84 retained the I.G.Mod.71 bolt guide rib as its sole locking lug and the bolt washer which was unscrewed to remove and disassemble the segmented bolt.  A pin through the washer bolt to keep it from being removed was an improvement as was the addition of an ejector, which the I.G.Mod.71 had lacked.

 

The rifles are finished with blued barrel, receiver and bolt in the white, with a support pieces being fire blued.  I.G. in Gothic style.  Like the I.G.Mod.71, the Prussian state where the rifles were in service is indicted by the crowned monarch’s cypher (F.W..L, W & F.A. Fredrick Albert, King of Saxony) stamped into the knoxform.  Also like the I.G.Mod.71, the caliber is noted on the octagonal barrel breach (10.95-11.05*).

 

The I.G.Mod.71/84 represents what may be the height of smalls arms manufacturing refinement, the workmanship being since unsurpassed.   As many as one million may have been manufactured.

Although the I.G.Mod.71/84 never saw front line military service, many saw service with German reserve and behind the lines units through WW1.   Large numbers were sold as surplus in the US and Canada and ammunition for them was made commercially into the mid-twentieth century.

PHOTO:  The rifle shown is an I.G. Mod. 71/84 German Mauser

DISTINGUISHING CHARACTERISTICS:  The left receiver flat is marked:  I.G.Mod. 71/84 in a highly Gothic style.  Unique sight.  8 shot tubular magazine, (An additional round could also be carried on the elevator and one in the chamber if desired).  The magazine fore end spring cap includes an integral stacking bar which extends from the cap to flush with the muzzle.   Unlike the M1886 Portuguese Kopatchek and the M1887 Turkish Mauser, the I.G.Mod.71/84 has no provision for cleaning rod whatever.

MISC NOTES:  *The depth of the rifling grooves in the I.G.Mod.71/84 is 0.15 mm, half the depth of the I.G.Mod.71.   Re-loaders should not expect ammunition designed for I.G.Mod.71/84 to preform as well in the I.G.Mod.71.

DISASSEMBLY:   The 71/84 bolt is tricky to remove.

1)  DO NOT REMOVE THE BOLT RETAINING SCREW!!!    It is pinned to the bolt itself with a tiny cross-pin and will not back out completely without breaking it.  It will back out sufficiently to allow the bolt retainer washer to slide over the receiver bridge.  Back out the bolt sufficiently to allow the washer to clear ... and no more.

2)  Open the bolt and pull it all the way to the rear.

3)  With the right hand (I'm right-handed) hold a good amount of back tension on the bolt and with the right thumb or a finger of the right hand hold the bolt retainer washer up so that it can clear the receiver bridge.

4)  While holding back pressure on the bolt, with the left hand move the magazine cut-off lever from the back position to the forward position.  As the cut-off lever is moving, the  bolt should softly snap back out of the receiver.

Re-installation is only a matter of re-introducing the bolt to the receiver.  It will slide past the spring without any tricky maneuvers being necessary.

 Subj: (no subject)
Date: 01-09-24 18:44:02 EDT
From: CUSICKT
To: KeithDoyon

 Keith:

The loading information I use for the 11 mm is as follows:   What I am giving you here are the loads I have found work best to this point.  Please understand with no baseline I kissed many toads before comming up with a princess.  All loads use a wax paper cover wad between the cushion wad and bullet base.

 Black Powder, goex FFg
Case Length:      2.320
Powder:              72 gr
Wads                  1 .060 or 2  .030  fiber
Bullet                 Lyman 436 gr seated .500     (measured from case top to bullet top. .120 compresson)
                           RCBS 396 gr seated .550
Lube:                  50/50 melted mix of Thompson pruple stuff and Thompson patch lube.

 

Pyrodex loads, use pyrodex RS
Case lentgth:      2.320
Powder:              50 grains
Wads:                 1 .060 or 2 .030  fiber
Primer:               CCI LR
Bullet seat:         LYMAN 346 GR seated .500  (measured case top to bullet top.)
                           RCBS 396 GR  seated  .550
Lube:                  50/50 melted mix of Thompson purple stuff and Thompson patch lube.

 

 I hope this base line may help others starting from scratch.  The trajectory pretty well matches the sights (at least with my gun).  The muzzle velocity is right around 1400 feet per second plus or minus 20 fps per second and fouling is medium.  I am still trying to figure out how you site at 300 meters.

Terry

71-84M11.jpg

Nose-cap with integral stacking bar.  Unusually, no provision was made for any
cleaning rod whatever.  A highly distinguishing charecteristic.

71-84M05.jpg

"Infanterie-Gewehr Model 1871/1884"

71-84M07.jpg

Unique and very well made rear sight.
 

71-84M09.jpg

  Bolt open showing Mauser elevator spoon partially elevated as bolt is
  partially opened.  Year of Mfgr. on right rear receiver.

Next 4 pictures below:   A trip around the knoxform!!  (Stock removed to expose lower knoxform).     "Spandau" is the arsenal where it was made (near Berlin).  "FW" is Kaiser Friedrich Wilhelm.  The rifle was manufactured in 1888.  They are also commonly seen  marked "Amberg" (Bavaria) and "L" (King Ludwig).

mausKnx2.jpg
MausKnx4.jpg
MausKnx3.jpg
MausKnx1.jpg

Page first built February 3, 1999
Revised September 21, 1999
Revised February 23, 2007

Updated: Oct 29, 2021