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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 31 |
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Over-all length, inches |
0.250 |
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Diameter of body, inch |
0.3325 |
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Material |
Brass |
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How secured |
Press-fit |
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Charge |
2.10 grains lead sulfocyanate, antimony sul-fide, potassium chlorate, pentaerythritol te-tranitrate |
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Guns used in |
20-mm Steel Case Mk 3 and Brass Case Mk 4; also in Army M21A1 series cases |
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The primer is the same as the Army Primers M36 and M36A1 |
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Figure 111. Percussion Primer Mk 31 |
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