1、.L - MIL-B-70448 LO fl 9799906 0354598 7 = 5-3743 MIL-B-70448 (AR) 30 OCTOBER 1987 MILITARY SPECIFICATION BARREL, MACHINE GUN, CAL .50, RECOIL AMPLIFIER, PRACTICE, M3 This specification is approved for use within the US Army Armament Munitions and Chemical Command, and is available for use by all De
2、partments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the M3 Recoil Amplifier for use on machine, gun, Cal .50: Browning, M2, Heavy Barrel, Flexible. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following speci
3、fications, standards and handbooks form a partr of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cite
4、d in the sol ic itat ion. SPECIFICATIONS MILITARY MIL-W-13855- Weapons: Small Arms and Aircraft Armament . Subsystems, General Specification for MIL-W-63150- Weapons and Support Materiel Standard Quality Assurance Provisions for STANDARDS MIL-STD-105- Sampling Procedures and Tables for Inspection by
5、 Attributes MIL-STD-109- Quality Assurance Terms and Definitions Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of uae in improving this document should be addressed to: Commander, U.S. Army Armament Munitions and Chemical Command, Attn. AMSMC-QA, Pic
6、atinny Arsenal, New Jersey 07806-5000 by using the self-addressed Standardiza- tion Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 1005 ISTRIBOTION STATEA.1earelease; distribution is unlimited. THIS DOCUMENT CONTAINS- - - -PAGES. * Provi
7、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-70448 LO 999970b 0354539 3 m MIL-B-70448 (AR) 2.1.2 Other Government documents, drawinqs and publications. The following other Government documents, drawings and publications form a part of this specif
8、ication to the extent specified herein. Unless otherwise specified, the issues shall be those listed in effect on the date of solicitation. DRAWINGS US ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER (ARDEC) PRODUCT AND PACKAGING DRAWINGS 9370140 - Discriminatr 9370141 - Wrench, Spanner 9
9、370142 - Barrel, Machine Gun, Caliber 50, Recoil P9370142 - Packaging Data Sheet Amplifier, Practice, M3 2.2 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein (except for associated detail specifications, specification sheets or MS
10、 standards), the text of this specification shall take precendence. Nothing in this specification, however, shall supersede applicable laws-and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Material. Materials shall be in accordance with the applicable drawings, spec
11、ifications and standards. J i 3.2 Parts. All parts shall comply with applicable drawings, specifications and standards. 3.3 Recoil amplifier. The recoil amplifier shall comply with all requivd on drawing 9370142, all associated drawings, and with all requirements specified in the .applicable specifi
12、cations and standards. 3.4 Assembleability. The recoil amplifier and discriminator shall readily attach and detach from the M2 Machine gun. When attached, the recoil amplifier and discriminator shall be securely retained on the M2 Machine gun. 3.5 Functioninq. When assembled to the M2 Machine Gun, t
13、he recoil amplifier and discriminator shall cause the weapon to function properly. The M2 Machine Gun with attached recoil amplifier and discriminator shall maintain an average rate of fire of 450 to 600 shots per minute. malfunctions directly attributable to the recoil amplifier or discriminator. T
14、esting shall be as specified in 4.5.1. There.shal1 be no stoppages or 2 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-70448 (AR) 3.6 Markinq. The recoil amplifier and wrench spanner shall be clearly marked in accordance with the applicable
15、drawing and the marking provisions of MIL-W-13855. 3.7 First article inspection. When specified in the contract or purchase order, a sample shall be subjected to a first article inspection in accordance with the technical provisions herein (see 4.3). 3.8 Workmanship. All parts and assemblies shall b
16、e . fabricated and assembled in a thorough, workmanlike manner. They shall be free of burrs, chips, sharp edges, cracks, surface defects, dirt, oil, grease, rust, corrosion products and other foreign matter. The cleaning method used shall not be injurious to any part nor shall the parts be contamina
17、ted by the cleaning agents. All required markings shall be neat and sharply defined. See MIL-W-13855. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection r
18、equirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Goverment reserves the righ
19、t to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5. The inspection set forth i
20、n this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies submitted to the Government for a
21、cceptance comply with all requirements of the contract. Sampling in quality conformance does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of any defective material. 4.2 Classification of inspections. The inspection
22、requirements specified herein are classified as follows: a. First Article Inspection (4.3) - b. Quality Conformance Inspection (4.4) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-7044B LO 779790b 0354603 3 MIL-B-70448 (AR) 4.3 First article i
23、nspection. 4.3,1 Submission. The contractor shall submit a first article as designated by the Contracting Officer for evaluation in accordance with the provisions of 4.3.2, The first article sample shall consist of the following items in sample quantities as indicated. Part Description Drawing Quant
24、 i ty Barrel, Machine Gun, Cal .SO Recoil L Amplifier, Practice, M3 9370142 32 Discriminator 9370141 64 Q 4.3.2 Inspections to be performed. First Article assemblies shall be subjected to all the examinations and tests specified in Table I, quality assurance provisions, and such other inspection as
25、necessary to determine compliance with contract requirements. 4.3,3 Rejection. If any assembly fails to comply with any of the applicable requirements, the First Article Sample shall be rejected. The government reserves the right to terminate its inspection upon any failure of an assembly in the sam
26、ple to comply with any of the stated requirements. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-o P G O ci u a, rn c .rl a, ri u ci .rl .rl e. 4J a I3 rn Li .rl. Er . H w c l L. . I I. d 4 c cc d d C r I cr I G I- I: 3 E Y Y W n 8 Li a, .rl w .rl
27、ri 3 d O u .rl 2 mmmmaJ mmmmmm . . . . O . rn Y u a Li u LI O rl-r ci a ai u X a, a c v .rl 2 2 c, Y 3 Li O O PI EOcia, LI ua 05 W C -rici Li5 a,-d Cu0 au %ri dd a, d rd arn 5.G mwrn drl rl ciLi aa, O0 cc CC rnci Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
28、om IHS-,-,-, MIL-B-70448 LO m 779770h O354603 7 m MIL-E-70448 (AR) 4.4 Quality conformance inspection. 4.4.1 Inspection lot formation. The term “inspection lot” is defined as a homogeneous collection of units of product from which a representative sample is drawn or which is inspected 100 percent to
29、 determine conformance with applicable requirements. Units of product selected for inspection shall represent only the inspection lot from which drawn and shall not be construed to represent any prior or subsequent quantities presented for inspection. Homogeneity shall be considered to exist provide
30、d the inspection lot has been produced by one manufacturer, in one unchanged process, using the same materials and methods, in accordance with the same drwings, same drawing revisions, same specifications and same specification revisions, and complies with the provisions for submission of product as
31、 specified in 6 MIL-STD-105. All material submitted for inspection in accordance with this specification shall comply with the homogeneity criteria specified herein, regardless of the type of inspection procedure which is being applied to determine conformance with requirements. Classification of De
32、fects and Test tables shall be performed on inspection lots as defined in 4.4.1 of this specification. Prior to these examinations, the parts and assemblies comprising the recoil amplifier shall have been inspected in accordance with the applicable Quality Assurance Provisions and MIL-W-63150. a., C
33、ritical defects. Unless otherwise specified, inspection 4.4.2 Examination. The examinations listed in the for critical defects shall be 100 percent. b. Major and minor defects. Examination for major and minor characteristics shall be performed in accordance with the classification of quality conform
34、ance inspections specified herein. Inspection Level II shall be used and individual AQLs applied in accordance with MIL-STD-105. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Y t v 1 er 3 E t 7 4 e. cv li memm m Co mmmm m m .o o a a, dpmmm m .d I
35、n w o. . b a, doo0 o CJ a a, C O z rn A4 u m $4 u 8 w u a a, u x a, “ .d c rn v 5 E Y LI O 3 !-I O O pi fi 01 -* $OE0 ou EO+Ja, ua o5 a, 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IIL-B-70Ll48 LO m 7777906 0354605 O m 4.5 Methods of inspection
36、. 4.5.1 Assembleability. The recoil amplifier and discriminator (right and left) shall readily attach to and detach from M2 Machine Gun. Wrench spanner (part 9370141) shall be used to tighten.gas cylinder to toggle block. 4.5.2 Functioninq test. The recoil amplifier shall be assembled to a M2 Machin
37、e Gun. Government standard .50 Caliber M858 ball plastic cartridges shall be used for the test. The M2 Machine Gun with attached recoil amplifier and discriminator shall be fired 50 rounds right side feed and 50 rounds left side feed. Each 50 round segment shall be fired 25 rounds spasmadic and 25 r
38、ounds continuous burst. The cyclic rate of fire for the 25 round continuous burst shall be recorded. !I 5. PACKAGING 5.1 Levels A and B. The recoil amplifier shall be packaged in accordance with packaging data sheet P9370142 and as specified in the contract. 5.2 Marking. Marking shall be in accordan
39、ce with the 5.3 Shippinq. When components from more than one lot are applicable packaging data sheet and as specified in the contract. shipped at one time, each lot shall be kept separate, and the division between lots clearly indicated to prevent mixing of the lots in transit. 6. NOTES 6.1 Intended
40、 use. The assembly covered by this specification is intended for use with Machine, Gun Cal. .SO: Browning, M2, Heavy Barrel, Flexible. 6.2 Orderinq data. Procurement documents shall specify the following: 6.2.1 Procurement requirements. a. Title, number and date of this specification. b. Quantity re
41、quired and delivery schedules. c. Serialization requirements, if applicable. d. Quality Conformance Inspection, if other than specified in Section. 4 of this specification. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-O i l i t. ! I i i t t I I
42、1 I I I i I O MIL-B-70448 (AR) e. First Article sample requirements, if other than specified in Section 4 of this specification. f. Packaging requirements, if other than specified in Section 5 of this specification. g. Responsibility for furnishing test machine gun, ammunition and links. (See 3.4 an
43、d 3.5) 6.3 Submission of inspection equipment desiqns for approval. See MIL-W-63150. Submit equipment designs as required to Commander, ARDEC, ATTN: AMSMC-QAF-I (D), Picatinny Arsenal, NJ, 07806-5000. 6.4 Drawinqs. Drawings listed in section 2 of this specification under the heading U. S. Army Armam
44、ent Research, Development and Engineering Center (ARDEC) may also include drawings prepared by and identified as U.S. Army Armament Research and Development Center (ARDC), U.S. Army Armament Research and Development Command (ARRADCOM), Edgewood Arsenal, Frankford Arsenal, Rock Island ArsFnal drawing
45、s. Technical data originally prepared by these activities are now under the cognizance of ARDEC. 6.5 Subejct term (key word) listinq. Caliber .50 Cartridge, Short Range Training Ammunition Machine Gun M2 Recoil Amplifier Small Arms Ammunition Custodian: Army-AR Preparing activity: Army-AR (Project 1005-A635) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
