TM 9-280 1944 Caliber .22 Rifles, All Types - US Army Combined ...

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DESCRIPTION AND FUNCTIONING BOLT, REAR SIGHT KNOB, REAR SIGHT LOCK LOCK BOLT ASE, REAR SIGHT TM 9-280 10 Figure 31 - Rear Sight Base Mounted on U.S. Rifle, Cal..22, M2 elevating screw. The bolt is slotted at the left end to hold the flat rear sight lock bolt spring which is attached at the bottom of the base with a screw. The left side of the grooved portion of the bolt is threaded to correspond with the threads of the elevating screw. These threads are held in tension against the elevating screw by the spring permitting the elevating screw to be turned up or down in the threads. The rear sight lock bolt knob screws on the right side of the rear sight lock bolt and is held by the rear sight lock bolt knob set screw. This permits the rear sight lock bolt knob to be unscrewed part way when pressure against the knob releases the rear sight elevating screw from the threads of the lock bolt allowing the slide to be moved up. The rear sight .pointer is screwed on the back side of the elevating base. c. The elevating slide is graduated and indexed, and provided with micrometer adjustment by means of the knurled knob located at its top. The rear sight pointer is screwed to the base to the left of the elevating slide. The screw hole is elongated to provide for adjustment. d. The elevating slide is an inverted L-shape. Its top extension is slotted in the center for the rear sight windage screw at the end of which is the knurled' rear sight windage knob. The rear sight aperture is assembled on the rear sight windage screw and is threaded to remove when the rear sight windage screw knob is turned. The rear sight aperture disk is screwed into the back of the aperture (fig. 32). The rear sight windage scale is screwed to the top piece of the 33
TM 9-280 10-11 CALIBER .22 RIFLES, ALL TYPES DISK, REAR SIGHT APERTURE APERTURE, KNOB, REAR SIGHT REAR SIGHT 3 ELEVATING SCREW SCREW, ELEVATING, REAR SIGHT KNOB, REAR SIGHT ~~~~~~~~WINDAGE BOLT, REAR SCREW SCREWINDAG i aSIGHT LOCK SCREW WINDAGE, REAR SIGHT , SPRING, REAR SIGHT LOCK BOLT BASE, REAR SIGHT RA PD 22719 Figure 32 - Rear Sight Assembly of U.S. Rifle, Cal. .22, M2 - Left Rear View elevating slide directly in front of the aperture. The screw holes of the windage scale are elongated to provide for adjustment. 11. BARREL AND RECEIVER GROUP. a. The barrel and receiver assembly, composed of the barrel assembly and receiver, of the M2 and ML Rifles are identical with the exception of the identification markings on the upper front surface. of the receiver. The barrel and receiver assembly are a permanent assembly and are not to be separated. The barrel and receiver group is composed of the barrel and receiver assembly, the front sight group, the trigger mechanism group, and the magazine retaining spring (fig. 33). b. Barrel Assembly. (1) The barrel assembly consists of the barrel, fixed stud, and the fixed stud pin. The barrel is 24 inches long and the rifling consists of four plain grooves 0.0025 inch deep. The twist is uniform right hand, one turn in 16 inches. The muzzle is rounded to protect the rifling, and the tenon at the rear is threaded for the purpose of securing the receiver to the barrel. The breech of the barrel is recessed to receive the ends of the ejector and extractor. On the top in the rear of the fixed stud are stamped the ordnance escutcheon, the initials of the place of manufacture, and the month year of manu 34
Page 1 and 2: K 1003.16 WAR DEPARTMENT TECHNICAL
Page 3 and 4: WAR DEPARTMENT Washington 25, D. C.
Page 5 and 6: TM 9-280 1 CALIBER .22 RIFLES, ALL
Page 7 and 8: TM 9-280 CALIBER .22 RIFLES, ALL TY
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Page 11 and 12: TM 9-280 1-3. CALIBER .22 RIFLES, A
Page 19 and 20: TM 9-280 7-8 CALIBER .22 RIFLES, AL
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Page 25 and 26: TM 9-280 8 FIRING PIN HOLE CALIBER
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TM 9-280 35-37 CALIBER .22 RIFLES,
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TM 9-280 39 CALIBER .22 RIFLES, ALL
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TM 9-280 41 c. Hangfire. Cause Defe
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TM 9-280 50 LU CALIBER .22 RIFLES,
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TM 9-280 ,50 CALIBER .22 RIFLES, AL
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TM 9-280 52 i CALIBER .22 RIFLES, A
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TM 9-280 53 ~sl, CALIBER .22 RIFLES
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TM 9-280 73-75 CALIBER' .22 RIFLES,
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TM 9-280 77 LOOP CALIBER .22 RIFLES
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TM 9-280 Accessories ..............
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TM 9-280 0 Page Oiling ............
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TM 9-280 1944 Caliber .22 Rifles, All Types - US Army Combined ...

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