FM 23-35 BASIC FIELD MANUAL
AUTOMATIC PISTOL, CALIBER .45, M1911 AND M1911A1
(The matter contained herein supersedes TR 1300-45A. January 3, 1938, and chapter 3, part one, Basic Field Manual, volume III. April 5, 1932.)
MECHANICAL TRAINING Paragraphs
I. Description ……… 1-2
II. Disassembling and assembling ………… 3-4
HI. Care and cleaning ………………….. 5-11
IV. Functioning ………. 12-14
V. Spare parts and accessories …………. 15-16
VI. Ammunition__ …….. 17-24
VII. Individual safety precautions 25-26
SECTION I DESCRIPTION 1. GENERAL.–a The automatic pistols, caliber .45, M1911 and M1911A1, are recoil-operated, magazine-fed, self-loading hand weapons (figs. 1 and 2). The gas generated in a car- tridge fired in the pistol is utilized to perform the functions of extracting and ejecting the empty cartridge case, cock- ing the hammer and forcing the slide to the rearmost posi- tion, thereby compressing the recoil spring. The action of the recoil spring forces the slide forward, feeding a live cartridge from the magazine into the chamber, leaving the weapon ready to fire again.
b. The M1911A1 pistol is a modification of the M1911 pistol The operation of both models of pistols is exactly the same. The changes consist of the following (fig. 2):
(1) The tang of the grip safety is extended better to pro- tect the hand.
(2) A clearance cut is made on the receiver for the trig- ger finger