TM 9-1275

I. Introduction
Data
II. Inspection
II. (Cont)
III. Tools
IV. Gen Maint
V. Bbl & Rcvr
3rd/4th Echelons
5th Echelon
VI. Trigger
VII. Stocks
VIII. Equipment
IX. Final Insp.
X. Malfunctions
 

Introduction

1. Scope
a. This manual is published for the information and guidance of ordnance maintenance personnel. It contains detailed instructions for inspection, disassembly, assembly, maintenance and repair of the U.S. rifle, cal. 30, M1 (fig. 1); U.S. rifle, cal. .30 M1C (sniper's) (fig. 2); and the U.S. rifle cal. .30 M1D (sniper's) (fig. 3). This manual does not contain general assembly or disassembly or information which is intended primarily for the using arms, since such information is available to ordnance maintenance personnel in FM 23-5.

b. Where "repair tolerances" as opposed to tolerances for new manufacture have been set up, such repair tolerances will continue in use. If additional tolerances or variations are desired, submit a specific request to the Chief of Ordnance.

c. Only rifles having the new spline-type gas cylinder are to be rebuilt. The receivers on rifles having the old type gas cylinders are of early manufacture and cause "eleven o'clock" feed stoppages. They are identified by the top of the front feed rib being cut away instead of coming up to a square corner.

d. Since the M1, M1C and M1D rifles are basically the same mechanically, as well as in operation and functioning,  the disassembly, assembly, inspection, maintenance and repair are covered generally.

2. Characteristics
The U.S. rifles cal. .30, M1, M1C and M1D are gas-operated, clip loaded, air-cooled, semiautomatic shoulder weapons. These rifles may be equipped with gun sling M1907 (leather) or gun sling M1 (webbing). When desired, grenade launcher M7 or M7A1, or bayonet M1 may be used with the rifles.

3. Difference Between Models
a. The U.S. rifles cal. .30 M1, M1C and M1D are basically the same. However, rifles of early and present manufacture of the same model differ somewhat due to change in design of some of the component parts.

b. The U.S. rifle M1C (sniper's) (fig. 2) is the standard U.S. rifle M1 with telescope M81 or M82 mounted on the receiver and a cheek pad laced to the stock. The flash hider M2 is furnished as an accessory with the M1C and M1D models.

c. The U.S. rifle M1D (sniper's) (fig. 3) differs from the U.S. rifle M1C (sniper's) only in the design of the telescope mount and bracket. On the M1C model the telescope is held in a removable mount having a dovetailed slide mating with that of a bracket permanently attached to the receiver and locked in place by means of two locking screws. On the M1D model, the telescope is held in a removable mount which in turn is attached to a fixed base on the barrel of the rifle by means of one screw and a dowel pin.

4. Forms and Records
Ordnance inspection forms and records, O.O.F. 7228, O.O.F. 7229, Inspection of Ordnance Material; OFM 202, Inspection Report of U.S. Rifle Cal. .30 M1; and OFM 205, Inspection Ticket for Rifle, U.S. Cal .30 M1, provide a written record of the status as regards serviceability of ordnance materiel in the hands of troops.

TM 9-1275