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b. TEST

1. Check headspace using headspace gage PN 7799734. See page 3-38, TEST.

2. Check firing pin protrusion using firing pin protrusion gage PN 7799735. See page 3-13, TEST.

3. Check extent of barrel erosion using barrel erosion gage PN 8448496 or PN 7799792. See pages 3-35 and 3-37, TEST.

4. Check muzzle erosion using muzzle erosion gage PN 8448677 (non-chrome barrels only) (p 3-35).

5. Check barrel straightness using barrel straightness gage PN 8448202 (p 3-37).

6. Check firing pin hole using firing pin hole gage PN 12620101 (p 3-1 8).

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