SD-15 Guide For Performance SpecificationsThis document provides guidance information on performance specifications focusing primarily on stating requirements in performance terms and ensuring that sufficient verification means are included in the specification to evaluate conformance. While the focus of this document is on defense specifications developed under DoD 4120.24-M, Defense Standardization Program DSP Policies and Procedures, the principles and techniques can also be applied to program unique performance specifications, performance-based purchase descriptions, commercial item descriptions, or any other type of procurement specification. This guide is intended to supplement the format and content requirements for writing performance specifications found in MIL-STD-961, Defense and Program-Unique Specifications Format and Content.

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Performance Specification Guide SD-15

3.0 REQUIREMENT

3.1 Design verification. When specified (see 6.2), a sample of the Tactical Sling shall be subjected to design verification in accordance with table I and 4.1.

3.2 First article inspection. When specified (see 6.2), a sample of the Tactical Sling shall be subjected to first article inspection in accordance with table I and 4.2.

3.3 Conformance inspection. When specified (see 6.2), a sample of the Tactical Sling shall be subjected to conformance inspection in accordance with table I and 4.3.

3.4 Operating requirements.

3.4.1 High ready position upon release. The Tactical Sling shall keep the weapon in the high ready position (see section 6.4.1) orientation when the weapon is released.

3.4.2 Low ready position upon release. The Tactical Sling shall keep the weapon in the low ready position (see section 6.4.2) orientation when the weapon is released.

3.4.3 Adjustment ability. The Tactical Sling shall enable the Warfighter to assume all fighting positions below as defined in FM 3-22 (chapters 4 and 7):

• Individual Foxhole Supported Firing Position

• Basic Prone Unsupported Firing Position

• Alternative Prone Firing Position

• Kneeling Supported Firing Position

• Kneeling Unsupported Firing Position

• Standing Firing Position

• Modified Supported Firing Position

3.5 Interface and interoperability requirements.

3.5.1 Webbing. The width of the Tactical Sling belt positioned on the shoulder of the Warfighter shall be no less than 1.0 inches and no more than 2.0 inches. The Tactical Sling belt shall be made of a soft web-like synthetic material.

3.5.2 Ambidextrous. The Tactical Sling shall allow for ambidextrous function with the M16 and M4 series rifle.

3.5.3 Quick release. The Tactical Sling shall have one-handed quick release type fastener to separate the weapon from the Warfighter. The fastener when released must allow the weapon to fully separate from the Warfighter without any further action. Loosening the sling to allow the user to remove the weapon is not considered as "fully separating" the weapon from the user.