1、 INCH-POUND MIL-PRF-32365 26November 2010 SUPERSEDING PRF13018852 6 December 2007 (See 6.4) PERFORMANCE SPECIFICATION BRACKET, FORWARD RAIL This specification is approved for use by the U.S. Army Armaments Research, Development and Engineering Center (ARDEC) and is available for use by all Departmen
2、ts and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification prescribes the performance requirement and associated verification provisions for the Bracket, Forward Rail, hereafter referred to simply as the Forward Rail Bracket or FRB. The FRB allows the non-modular M16 series
3、 weapon (that do not have a rail system) to have a bipod and/or a weapons light, and/or forward vertical grip. 1.2 Requirement levels. This specification lists two values for certain performance parameters. The threshold (T) is the minimum acceptable level. The objective (O) is the desired level at
4、which performance of the FRB results in an operationally significant increase in capabilities. When only one requirement is stated, it is the threshold requirement. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 or 4 of this specification. This
5、section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of document
6、s cited in sections 3 and 4 of this specification, whether or not they are listed. AMSC: N/A FSC: 1005 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Comments, suggestions, or questions on this document should be addressed to: Commander, U.S. Army ARDEC, ATTN: RDAR
7、-QES-E, Picatinny, New Jersey 07806-5000, or emailed to ardecstdznconus.army.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or netw
8、orking permitted without license from IHS-,-,-MIL-PRF-32365 2 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these
9、documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-372 Cleaning Compound, Solvent (For Bore of Small Arms and Automatic Aircraft Weapons) MIL-PRF-14107 Lubricating Oil, Weapons, Low Temperature MIL-G-21164 Grease, Molybdenum Disulfide, For Low and
10、 High Temperatures, NATO Code Number G-353 MIL-L-46000 Lubricant, Semi-Fluid (Automatic Weapons) MIL-PRF-63460 Lubricant, Cleaner, and Preservative for Weapons and Weapon Systems DEPARTMENT OF DEFENSE STANDARDS MIL-STD-810 Environmental Engineering Considerations and Laboratory Tests MIL-STD-1913 Di
11、mensioning of Accessory Mounting Rail for Small Arms Weapons MIL-STD-1916 DoD Preferred Methods for Acceptance of Product (Copies of these documents are available online at https:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 1
12、9111-5094.) 2.2.2 Other Government documents, drawings and publication. The following other Government documents, drawings, and publications 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 c
13、ontract. US ARMY DEVELOPMENT TEST COMMAND TOP 3-2-045 Automatic Weapons, Machineguns, Hand, and Shoulder Weapons (Copies of these documents may be ordered from the US Army Developmental Test Command, ATTN: Publications, 314 longs Corner Road, Aberdeen Proving Ground, MD, 21005-5005, or online at htt
14、p:/www.dtc.army.mil/publications/topsindex.aspx). 2.3 Non-Government publication. The following documents form a part of this document to the extend specified herein. Unless otherwise indicated, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM-B1
15、17 Standard Practice for Operation Salt Spray (Fog) Apparatus Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32365 3 (Copies of ASTM standards may be ordered online at http:/www.astm.org/ or from the ASTM International Engineers, 400 Commonw
16、ealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of Precedence. Unless otherwise noted herein or in the contract, 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
17、applicable laws and regulations unless a specific exemption is obtained. 3. REQUIREMENTS 3.1 Design verification. When specified (see 6.2), a sample of the Forward Rail Bracket shall be subjected to design verification in accordance with TABLE I and 4.1. 3.2 First article inspection. When specified
18、(see 6.2), a sample of the Forward Rail Bracket 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 Forward rail Bracket shall be subjected to conformance inspection in accordance with TABLE I and 4.
19、3. 3.4 Operating requirements. 3.4.1 Bottom rail. The Forward Rail Bracket shall have at least one rail mounting surface section mounted to the bottom of the weapon (T). The Forward Rail Bracket shall have supporting side rails as mounting surfaces (O). 3.4.2 Length requirement. The Forward Rail Bra
20、cket bottom rail shall be no less than 5 inches in length but shall not interfere with the mounting and operational use of weapon devices that include but is not limited to bipod, flashlight, and forward vertical grip. 3.5 Interface and interoperability requirements. 3.5.1 Rail profile. The Forward
21、Rail Bracket shall be configured to the following sections and figures of MIL-STD-1913: a. Accessory mounting rail profile (section 5.1 and figure 1), b. Recoil groove (section 5.2 and figure 2) c. Dimensioning and tolerance (section 4.1) d. Edge break (section 4.1.1) e. Fillet radii (section 4.1.2)
22、 3.5.2 Weight. The Forward Rail Bracket weight (with supporting side rails, if provided) shall be no greater than 16 ounces. 3.5.3 Attachments to M16 rifles. The Forward Rail Bracket shall attach to M16 series rifles without MIL-STD-1913 lower rails. The attachment process shall be without any perma
23、nent modification to the weapon, providing rail surface forward of the barrel nut. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32365 4 3.5.4 Non-interference. The Forward Rail Bracket shall not interfere with the weapon or ancillary devic
24、e operation/function. 3.5.5 No configuration change. The Forward Rail Bracket shall not require the removal of the heat shield from the hand guard and shall allow for the re-installation of the hand guard. 3.6 Environmental requirements. 3.6.1 Operational temperature. The Forward Rail Bracket shall
25、function throughout a temperature range from -55 degrees Fahrenheit to +155 degrees Fahrenheit. 3.6.2 Salt spray. The Forward Rail Bracket shall be safe to handle, be fully operable, and show no evidence of corrosion after a minimum of forty-eight (48) hours of salt fog exposure. 3.6.3 Chemical comp
26、atibility testing. The Forward Rail Bracket shall be compatible with Army standard chemicals listed below: MIL-PRF-372 Cleaning Compound, Solvent (For Bore of Small Arms and Automatic Aircraft Weapons) MIL-PRF-14107 Lubricating Oil, Weapons, Low Temperature MIL-G-21164 Grease, Molybdenum Disulfide,
27、For Low and High Temperatures, NATO Code Number G-353 MIL-L-46000 Lubricant, Semi-Fluid (Automatic Weapons) MIL-PRF-63460 Lubricant, Cleaner, and Preservative for Weapons and Weapons Systems 3.6.4 Heat resistant. The Forward Rail Bracket shall be heat resistant so that it does not transfer excessive
28、 heat from the weapon system. 3.7 Support and ownership requirements. 3.7.1 Installation/Removal. The Forward Rail Bracket shall be installed and removed at the operator/user level without the use of special tools. Special tools are defined as any tool other than a flat or cross-tip screwdriver. 3.7
29、.2 Drop Test. The Forward Rail Bracket shall withstand a five-foot drop, while attached to the weapon with a two pound weight attached to the rail, onto concrete without becoming unserviceable. 3.7.3 Color. The Forward Rail Bracket shall be a dull non-reflective color. 3.7.4 Endurance. The Forward R
30、ail Bracket shall not melt, deform or become unserviceable in performance after firing a total of 1260 rounds with an M16 rifle with a two pound weight attached on the hand grip. 3.7.5 Workmanship: Finished items and/or parts shall not exhibit poor material and processing such as seams, laps, lamina
31、tions, cracks, visible steps, sharp edges, nicks, scratches, burrs, deformations, and missing operation which may affect serviceability, functioning, operations, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32365 5 appearance or safety. Fi
32、ns and other extraneous metal shall be removed from cast or forged parts. Hammering to shape, salvage operations (including repair by welding) or other similar practices shall not be permitted without prior approval. 4. VERIFICATION TABLE I. Requirement/verification cross reference matrix METHOD OF
33、VERIFICATION CLASSES OF VERIFICATION 1 - Analysis A - Design verification 2 - Demonstration B - First article 3 - Examination C Conformance verification 4 - Test Section 3 Requirement Section 4 Method Verification Methods Verification Class 1 2 3 4 A B C 3.1 Design verification 4.1 X X X 4-0-1 3.2 F
34、irst article inspection 4.2 X X X 4-0-1 3.3 Conformance inspection 4.3 X X X 4-0-1 3.4. Operating requirements 4.4 X X 2-0-1 2-0-1 2-0-1 3.4.1 Bottom rail 4.4.1 X 2-0-1 2-0-1 2-0-1 3.4.2 Length requirement 4.4.2 X 2-0-1 2-0-1 2-0-1 3.5 Interface & interoperability requirements 4.5 X X X 2-0-1 2-0-1
35、2-0-1 3.5.1 Rail Profile 4.5.1 X 2-0-1 2-0-1 2-0-1 3.5.2 Weight 4.5.2 X X 2-0-1 2-0-1 2-0-1 3.5.3 Attachment to M16 rifles 4.5.3 X X 2-0-1 2-0-1 2-0-1 3.5.4 Non-interference 4.5.4 X X 2-0-1 2-0-1 2-0-1 3.5.5 No configuration change 4.5.5 X 2-0-1 2-0-1 2-0-1 3.6 Environmental requirements 4.6 X 4-0-1
36、 4-0-1 3.6.1 Operating temperature 4.6.1 X 2-0-1 2-0-1 3.6.2 Salt spray 4.6.2 X 1-0-1 1-0-1 3.6.3 Chemical compatibility testing 4.6.3 X 3-0-1 3-0-1 3.6.4 Heat resistant 4.6.4 X 2-0-1 2-0-1 3.7 Support & ownership requirements 4.7 X X X 2-0-1 2-0-1 2-0-1 3.7.1 Installation/Removal 4.7.1 X X 2-0-1 2-
37、0-1 2-0-1 3.7.2 Drop test 4.7.2 X 2-0-1 2-0-1 2-0-1 3.7.3 Color 4.7.3 X X 2-0-1 2-0-1 2-0-1 3.7.4 Endurance 4.6.4 X 2-0-1 2-0-1 2-0-1 3.7.5 Workmanship 4.6.5 X 2-0-1 2-0-1 2-0-1 Notes: Verification (4-0-1) Test 4, Accept with 0 Failure, and Reject with 1 Failure. 4.1 Design verification. When specif
38、ied (see 6.2), design verification shall be performed by demonstration, examination and tests of all performance requirements as specified in TABLE I. 4.1.1 Design verification test rejection. If a sample fails to meet any specified performance requirement, the design shall be rejected. Provided by
39、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32365 6 4.2 First article inspection. When specified (see 6.2), first article inspection of sample items shall be executed by demonstration, examination and tests of all performance requirements in accordan
40、ce with TABLE I. 4.2.1 First article rejection. If any sample fails to comply with the specified performance requirements, the sample shall be rejected. 4.3 Conformance verification. When specified (see 6.2), conformance inspection of lot samples shall be accomplished by examinations, demonstrations
41、 and tests in accordance with Table I. 4.3.1 Lot formation. Lot formation shall be in accordance with the lot formation requirement as specified in MIL-STD-1916. 4.3.2 Lot Rejection. If any sample fails to comply with the specified performance requirements, the lot shall be rejected. 4.4 Operating V
42、erification 4.4.1 Bottom rail. The Forward Rail Bracket shall be visually inspected for a bottom rail. 4.4.2 Length requirement. The Forward Rail Bracket length shall be measured using SMTE. 4.5 Interface and interoperability verifications. 4.5.1 Rail profile. The Forward Rail Bracket shall be teste
43、d to ensure it is configured to MIL-STD-1913 standards. 4.5.2 Weight. The Forward Rail Bracket shall be weighed using SMTE. 4.5.3 Attachment to M16 rifles. The Forward Rail Bracket shall demonstrate that it can attach to a non-modular M16 series rifles, without any modification to the weapon, provid
44、ing rail surface forward to the barrel nut. 4.5.4 Non-interference. The Forward Rail Bracket shall be tested to ensure it shall not interfere with the weapon or ancillary device operation. 4.5.5 No configuration change. The Forward Rail Bracket shall demonstrate that the installation to the weapon d
45、oes not remove the heat shield and the hand guard is re-installed, if removed, during the process. 4.6 Environmental verifications. 4.6.1 Operational temperature verification. 4.6.1.1 Extreme hot. The Forward Rail Bracket shall be mounted to a M16 series rifle and shall be conditioned to a temperatu
46、re of one hundred and fifty-five degrees Fahrenheit (155F), IAW MIL-STD-810 for twelve (12) hours. 210 rounds shall be fired from the M16 series rifle. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32365 7 Firing shall take place no greater
47、 than 3mins from temp chamber removal. If the time before firing is exceeded, the Forward Rail Bracket with the M16 shall be reconditioned at the extreme low temperature for an additional two (2) hrs before firing. The Forward Rail Bracket shall be inspected for signs of degradation or flaws. 4.6.1.
48、2 Extreme cold. The Forward Rail Bracket shall be mounted to a M16 series rifle and shall be conditioned to a temperature of minus fifty-five degrees Fahrenheit (-55 F), IAW MIL-STD-810 for twelve (12) hours. 210 rounds shall be fired from the M16 series rifle. Firing shall take place no greater tha
49、n 3mins from temp chamber removal. If the time before firing is exceeded, the Forward Rail Bracket with the M16 shall be reconditioned at the extreme low temperature for an additional two (2) hrs before firing. The Forward Rail Bracket shall be inspected for signs of degradation or flaws. 4.6.2 Salt spray. The Forward Rail Bracket shall be exposed to a Five Percent (5%)
