1、I INCH-WU6-1 MIL-C-l4385D(AR) 9 December 1991 SUYERSEDING MIL-C-14385C(AR) 27 JUNB 1986 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to Commander, Armament Research, Development and Engineering C
2、enter, US Army Armament, Munitions and Chemical Cmand, AWN: 12189-4050 by using SWAR-CCB-SS, Watervliet, N.Y. the self-addressed Standardization Document Improvement MILITARY SPECIFICATION CANNON, 4oMM DUAL AUTOMATIC GUN: M2A1 AND CLIP, CHARGER: M3 This specification is approved for use by the Depar
3、tment of the Army and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification supports the acquisition of the recoil-operated Cannon, Dual, 4W: =Al, consisting.of twin barrels with flash suppressors, breech . rings, casings, recoil cy
4、linders and loaders, for single and automatic firing and the M3 charger-clip for feeding the cartridges. This specification includes the miniaqm essential Engineering and Packaging Requirements and the necessary ulity Assurance Provisions to determine that these requiresents have been met. 2. APPLIC
5、ABLE DOCUIIIBNTS e 2.1 Government Documents. 2.1.1 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 documents are those listed in the issue of
6、the Departnent of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). AMSC N/A FSC 1010 - DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permi
7、tted without license from IHS-,-,-I MIL-C-14385D 10 9979906 0496950 3 3 SPECIFICATIONS . MILITARY MIL-C-13931 - Cannon, General Specification for MIL-P-14232 - Parts, Equipment and Tools for Army Material, Packaging of MIL-X-45607 - Inspection Equipment, Acquisition, Maintenance and Disposition of S
8、TANDARDS C MILITARY MIL-STD-129 - Marking for Shipment and Storage MIL-STD-1190 - Minimum Guidelines for Level C Preservation, Packing and Marking MIL-STD-2073- - DOD Material Procedures for Developnient and Application of Packaging Requirements (Unless otherwise indicated, copies of federal and mil
9、itary specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Qovernment documenta. drawings, and ublications. The following other Governbent documents, drawings, and publications for
10、a a part of this specification to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS (see 6.7) U.S. Army Armament Research, Development and Engineering Center(ARDEC1 5583768 - Clip, Charger, M3 EPL 5583768 - Engineering Parts List for Cl
11、ip, Charger, M3 - 7305371 - Gun, Automatic 4oEM WA1, General Arrangement EPL 7305371 - Engineering Parts List for Cannon, 40EM Dual Automatic un: MA1 PDS P7305371 Gage 5276650 age 7247039 - Packaging Data Sheet, Gun, Automatic 4M, M2A1 - awe, Piring Pin Protrusion . - Gage, Heedepace 2 Provided by I
12、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Gage 7247040 - Gage, Headspace PUBLICATIONS Mes ter LQAP 5583768 Charger, M3 - Msster List of Quality Assurance Provisions for Clip, Master WAP 7305371 4(1EM Dual Automtic Gun: MU1 - Master List of Quality Assurance
13、 Provisions for Cannon, QAP-APPENDIX -WVA - General Quality Assurance Provisions (Copies of drawings, and other Government documents required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the Procuring Contracting
14、Officer.) 2.2 Non-Government publications. The following docmnt(s) fora a part of this document to the extent specified herein. Unless otheiwise specified, the issues of the documente which are WD adopted are those liated in the issue of the DODISS cited in the solicitation. Unless otherwise specifi
15、ed, the issues of docuarente not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). American Society for Testing and Materials (ASTM) ASW D 3951 - Comercial Packaging, Practice for (Application for copies should be addressed to the ASm, 1916 Race Street, Philad
16、elphia, Pennsylvania 19103-1137.) P (Non-Govermnt standards and other publications are nonnally available from the organizations that prepare or distribute the documents. be available in or through libraries or other informetionel services.) These docuiiients also may 2.3 Order of Precedence. docume
17、nt and the reference8 cited herein, the text of this document takes precedence. regulations unless a specific exeaption has been obtained. In the event of B conflict between the text of this Nothing in this document, however, supersedes applicable laws end 3. REQUIREMENTS 3.1 General requirements. a
18、ccordance with the applicable drawings 7305371. 5583768, BPL 7305371 and EPL 5583768, this specification, MIL-C-13931, and all referenced documents. Any conflicts are to be resolved by means of the order of precedence (see 2.3). 3.2 First article. specifically waived in the contract (see 4.3 and 6.2
19、). requirements shall be waived without review and approval by the Procuring Cannon, clips and component parts shall be in The contractor shall submit a first article unless it is No first article 3 c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M
20、IL-C-14385D 10 9999906 0496952 7 MI L-C- 14385D (MR) Contracting Officer (see 6.4). 3.3 Operation. 3.3.1 Cannon. interference, erratic movement or ralfuiiction. 3.3.2 Charger-c1iK.m. position. applied pressure and return to retracted ponriition under spring pressure without The cannon aholl operate
21、within the deaigne rate of fira without The assembled clips shall hold each round firmly in proper Each hook of the assembled clips shall move to extended position under I lag, sticking or binding. 3.4 Mechanical requirements. 3.4.1 Breech casing bodies. Preparatory to aachining the fitted bolt hole
22、s, the breech casings shall be so assewbled in matched pairs 80 to insure correct alignment of the trunnions and the recoil guideways. 3.4.2 Firing Pins. but shall not be hand stoned. the breechblock shall be not less than 0.099 inch nor greater than 0.114 inch. The point of the firing pins my be fi
23、nished with crocus cloth The protrusion of the firing pin frou the faca of 3.4.3 Headspace. 0.024 inch. breechblock and the base of a mnximum cartridge when both are in the firing position.) Headspace shall be not less than 0.002 inch nor greater than (Headspace is the clearance between the forward
24、face of the 3.5 Recoil cylinders. volume of fluid specified on the recoil cylinder assembly drawing. The recoil mechrinisr shall be filled with the type and 3.6 Proof testing, Cannon, replacement tubes, and replacement flash suppressors . shall be subject to proof tcnl.ing. 3.7 Performance. b 3.7.1
25、automatic firing. 3.7.2 High pressure resistans. chamber pressure of 48,600 plus or minus 1,700 pounds par square inch when tested as specified in 4.5.2.3 (NOTK: Chamber pressure resistance for automatic firing is 43,000 pounds per square inch). Firing. Cannon aiid charger clips shall function prope
26、rly during single and Irregularities and defects shall be corrected before acceptance. The cannon shall be capahle of withstanding a 3.7.3 Firing rate. per minute from each of the cannon, at approximately 70 degrees Fahrenheit ambient temperature. The firing rate on AUTO-FIRE shall be not less than
27、120 rounds 3.7.4 Becoil. recoil shall be not less than 7.4 inches nor more than 8.3 inches. The recoil cylinder of each cannon shall be adjusted so that the Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-14385D 10 9799906 O436953 9 W 3.7,5 Mat
28、erial soundness. and fractures and shall comply with the soundness requirerents specified on the applicable documents. 3.7,6 proof firing no more than 15 rounds, shall not exceed the inside (minimum bore) diameter specified on the applicable drawing by more than the enlargement specified in TABLE I.
29、 After proof firing, all parts shall be free of cracks e Bore enlarvement. Bore diameters, measured across the rifled lands after TABLH I, Bore enlargement. I Distance forward of 2 Cal. commencement of rifling O. 10 inch 1 cal. -c_ to muzzle Enlargement (inch) O. 004 0 . 004 O. 003 NOTE: distance ot
30、her than the distances given, c Interpolate linearly to determine the allowable bore enlargement at 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspect purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified he
31、rein. Except as otherwise specified in the contract or purchase order, the contractor may use hie own or any other facilities suitable for the perforaance of the inspection requirements specified herein, unless disapproved by the overnment. The Government reserves the right to perform any of the ins
32、pections set forth in this specification where such inspections are deed necessary to ensure supplies and services conform to prescribed requirements. Unless otherwise specified in the contract or 4.1.1 Responsibility for compliance. sections 3 and 5. part of the contractors overall inspection syste
33、m or quality program, of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufact
34、uring operations, is an acceptable practice to ascertain conforniance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it conunit the Government to accept defective material. 4.2 .C_lassification of inspections. The inspec
35、tion requirements specified herein are classified as follows: All items shall meet all requirements of The inspection set forth in this specification shall become a The absence a. b. First article inspection (see 4.3). First Article - Initial Production Test (FA-IPT) (see 4.4). C. Wality conformance
36、 inspection (see 4.5). 3 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C- 14385D( AR) 4.3 First article inspection, Unless otherwise specified in the contract, (see 6.2), First Article cannon and specified parts thereof shall be insFcted by t
37、he contractor and submitted to the doverment for approval. Inspection shall be in accordance with applicable Quality Assurance Provisions (QAPs) and QAP-APPENDIX-WVA. QAPs are listed in Master LQAF 7305371. First article sample sizes shall be as specified in applicable item OMS, or the contract, as
38、applicable. production processes to be used during quantity production. First article cannon and parts therof shall be representative of the 4.4 First Article - Initial Production Test (FA-IPTl. contract, (see 6.2), First Article cannon shall be subjected to Initial h-oduction Testing by the Governm
39、ent or any agency specified by the Goverrigent 4nd my be conducted at a Government facility to assure compliance with the requirements of this specification and any additional requirements listed in the contract. Initial Production Testing procedures and the sample size of First Article cannon shall
40、 be as specified in the contract. representative of the production processes to be used during quantity production. When specified in the Birst Article cannon and parts thereof shall be 4.5 Quality conformance insmction. 4.5.1 Examinetio=. 4.6.1.1 Inspection provisionq. Cannon, chargerclips and part
41、s thereof shall be inspected for conformance to requirements of this specification; #IL+-13931; QAPs listed in Master LQAP 7305371: Master LQAP 5683768; and QAP-APPENDIX-WVA. 4.5.1.2 Breech casing bodies. Alignment of the trunnions and the recoil guideways shall be gaged to assure Compliance with 3.
42、4.1. 4.5.1.3 Firing pin Protrusion. Protrusion of the firing pin from the face of the breechblock shall be measured with firing pin protrusion gage 5276650 or an approved equivalent, to detarine compliance with the requirements of 3.4.2. 4.5.1.4 Headspace. Headsrpace shall be meqsured with headspace
43、 gages 7247039 and 7247040 or an approved equivalent to determine compliance with the requirement of 3.4.3. 4.5.1.5 Recoil cvlinders. filled with the proper type and volume of fluid as specified in 3.5. 4.5.1.6 Final examination. shall be completed after testing and prior to preservation and packagi
44、ng to determine compliance with this specification, MIL shall be the same as specified ir1 the contract (sec 6.2). 5.3 Markinp of packages. Cleaning, drying, preservation, unit Quantity in unit packape (QUPl. When Level C packaging in accordance with E 5.3.1 Marking (including bar code marking) of t
45、he unit, package, intemediate packages, and exterior shipping containers shall be in accordance with MIL-STD-129. Levels A. B and C. 5.3.2 Level X - industrial. Marking of the unit package, intemediate packages, and exterior shipping containers shall be in accordance with ASTM D 3951 (see 6.2). Bar
46、code marking shall be in accordance with MIL-STD-129. 6, NOTES (This section contains informat.ion of helpful, but is not mandatory.) general or explanatory nature that may bo 6,l Intended use. Antiaircraft, Self-Propelled, Twin, 40MM, M42Al System. 6.2 Acquisition requirements. Acquisition document
47、s must specify the following: The cannon specified herein is intended for use with the Gun, b. C. d. e. f. 43. h. i. Title, number and date of the specification. Issue of WDISS to be cited in the solicitation, and if required, the specific issue of individual documents referenced (see 2.1). Requirem
48、ents for and the number of cannon, components thereof, or both to be submitted for first article by the contractor (see 3.2). The examinations 8nd tests to be performed by the contractor and the examinations and tests to be performed by the Government. All inspection and test data that is required.
49、At whose expense a retest may be performed. Any additional or extended examinations and tests beyond the sc-cps of this specification. 9 Serial numbers for the cannon and repair tube assemblies. Inspection equipment, responsibility for acquisition, maintenance, and disposition thereof, if other than as specified (see 4.5.3). 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-14385D 10 M 99
