MIL-PRF-71139A
2.3 Non-Government publications. The following documents form a part of this document to the
extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the
solicitation or contract.
ASTM INTERNATIONAL
ASTM D1729
Standard Practice for Visual Appraisal of Colors and Color Diffusely-
Illuminated Opaque Materials
(Copies of this document are available from ASTM International, 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959 or www.astm.org.)
2.4 Order of precedence. In the event of a conflict between the text of this document and the
references cited herein, the text of this document takes precedence. Nothing in this document, however,
supersedes applicable laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Design verification. When specified (see 6.2), a sample of M792 cartridges shall be subjected
to design verification in accordance with 4.2.
3.2 First article. When specified (see 6.2), a sample of M792 cartridges shall be subjected to first
article inspection in accordance with 4.3.
3.3 Conformance inspection. For lot acceptance (see 6.2), a sample of M792 cartridges shall be
subjected to conformance inspection in accordance with 4.4.
3.4 Interface and interoperability.
3.4.1 Weapon interface. The cartridge configuration shall conform to drawing 12013689.
3.4.2 Projectile torque. The projectile shall be capable of withstanding a minimum torque of 30
inch-pounds without rotational movement with respect to the cartridge case.
3.4.3 Projectile extraction. The tensile force necessary to extract the projectile from the cartridge
case shall be between 2000 and 4100 pounds inclusive.
3.4.4 Noise. The average peak sound pressure level (P, decibels) and pulse "B" duration (t,
milliseconds) shall be limited in intensity and duration such that the following equation can be satisfied
when measured 0.46 meter left of the weapon breech:
P - 6.64 [log(200/t)] < 167 dB
In addition, the pulse "B" duration shall not exceed 200 milliseconds.
3.4.5 Toxic fumes. The cartridge shall not produce toxic fumes (as defined in TOP 2-2-614) in
excess of the concentrations produced by fielded (control) M793 Target Practice with Trace ammunition.
3.4.6 Primer sensitivity. The mean critical height (H) plus five standard deviations for the sample
primers shall not exceed 19 inches. The mean critical height minus two standard deviations for the sample
primers shall not be less than 2 inches.
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