9 Mannlicher System Steyr-Mannlicher 1886/1888/1890 Italian Mannlicher-Carcano M1891/1938Dutch M1895 MannlicherPedersen Self-LoaderM1 GarandCommission-Gewehr 1888French Berthier 1890/1907/1916Hungarian 35M1895 Lee Navy (sort of)
10 Mannlicher System PRO Cheap Light and compact Quick to load Very little to go wrongCONGun single-shot without clipSome not reversibleDifficult to “top off”
45 Detachable Magazines First invented and patented by James Paris Lee in 1879Before either type of clipDesign has not changed muchsince 1879
46 Box Magazine Basic principles Holds multiple cartridges Provides motive force to push cartridges into the bolt's path to feedUsually includes feed lips to control cartridgeSelf-contained and generally removable from firearm
72 Common Magazine Failure Points Bent feed lipsWeak feed springDented magazine body
73 Failure Modes Deformed feed lips can have several effects: Bullet nose too low; jams into feed ramp or front of magazine bodyBullet nose too high; extractor does not seatCase head not controlled; cartridge jumps loose entirelyCase head held too low;bolt rides over top of cartridge case
74 Failure ModesFeed lip geometry is critical to proper function, and is the primary cause of malfunctions in self-loading firearms.Often cheap 3rd-party magazines have tolerances greater than allowable for reliability.Even different factory models of the same gun can have this trouble – like Ruby pistols.
76 Failure ModesA dented magazine body will prevent follower travel. Often magazine remains functions but with limited capacity.A weak feed spring will fail to raise a cartridge fast enough to be fed by the bolt on a semiauto. Problem often presents on the last few rounds in the mag.
77 Some Unusual Magazines Madsen LMGFeed lips in receiver,not magazine
78 Some Unusual Magazines Johnson LMGSame thing – feedlips not on mag