Figure Viseheld stamping fixture with barrel and receiver assembly in place

Figure 89. Carbine clamped in bench-mounted stamping fixture.

Carbine Assembly

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4. Use white filler as prescribed in (1) above to increase legibility.

Note. Under no circumstances will the original serial number be obliterated.

5. Upon completion of the stamping operation, assemble the carbine and operate through the complete firing cycle to determine whether the receiver has been deformed.

(c) Bench-mounted stamping fixture. This fixture is especially useful at depot maintenance installations where large quantities of carbines are to be restamped because only the removal of the bolt from the carbine is required before clamping the carbine in the fixture. Furthermore, positioning and spacing of the stamping fixture is accomplished mechanically.

(d) Restampimg with bench-mounted stamping fixture.

1. Secure the fixture to the bench or table by inserting bolts through the holes, provided for this purpose, in the base of the fixture. Allow sufficient clearance for the unobstructed insertion of the carbine in the fixture.

Figure 91. Assembling barrel to receiver.
Figure 92. Checking barrel and receiver alignment.

2. Remove the bolt from the carbine and clamp the carbine in the fixture, as indicated in figures 89 and 90.

3. Place a 3/32-inch stamping fixture (Fig. 90). Position and space the stamping fixture by adjusting the stamping guide. Strike the stamping fixture with one firm blow of the hammer to insure a neat and distinct impression. Repeat this procedure until all the digits of the serial number are transposed.

Note. The 3/32-inch stamping fixture is not included in the supply system and must be procured locally.

4. Upon completion of the stamping operation, install the bolt in the receiver and operate through the complete firing cycle to determine whether the receiver has been deformed during the stamping operation.

Note. Under no circumstances will the original serial number be obliterated.

(e) Inspection. All carbines will be inspected to insure that the relocated serial number is a duplicate of the original serial number.

/'. Counterbore Muzzle.

(1) The muzzle of all barrels must be counterbored (Fig. 78) during re-rebuild to remove tool marks, nicks, and burrs in the muzzle end of the barrel.

(2) The depth or diameter of counterbore will be determined by the amount of blemishes to be removed.

(3) All barrels will be eounterbored slightly during rebuild , even though there is no visible blemish.

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