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| U.S. EXPLOSIVE ORDNANCE |
| PART 1 - PROJECTILES, PROPELLANT, AND PROECTILE FUZES |
| Chapter 4 - PRIMERS AND TRACERS |
| Section 2 - PRIMERS |
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Percussion Primer Mk 22 |
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This primer is exactly like the Percussion Primer Mk 21, except that it is secured by a push-fit rather than threads. The Mk 22 is used in 40-mm Brass Case Mk 1 and Steel Case Mk 3. |
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Figure 110. Primers (not proportionate sizes) |
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