us army military field manual fm 2310 sniper training外语英文电子书

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1、*FM23-1017August1994FIELDMANUALHEADQUARTERSNo.23-10DEPARTMENTOFTHEARMYWashington,DC,17August1994SNIPERTRAININGCONTENTSDISTRIBUTIONRESTRICTION:Approvedforpublicrelease;distributionisunlimited.*ThispublicationsupersedesTC23-14,14June1989.iFM23-10iiFM23-10iiiFM23-10ivFM23-10v,FM23-10viFM23-

2、10viiFM23-10viiiFM23-10APPENDIXBM21SNIPERWEAPONSYSTEMTheNationalMatchM14rifle(FigureB-1)anditsscopemakeuptheM21sniperweaponsystem.TheM21isaccurizedIAWUnitedStatesArmyMarksmanshipTrainingUnitspecificationsandhasthesamebasicdesignandoperationasthestandardM14rifle(FM23-8),exceptforspecially

3、selectedandhand-fittedparts.SectionIM21SNIPERWEAPONSYSTEMThissectiondescribesthegeneralcharacteristicsoftheM21SWS.TheM21hasbeenreplacedbytheM24(Chapter2);however,theM21isstillinusethroughouttheUSArmy.B-1.M21DIFFERENCESSignificantdifferencesexistbetweentheM21SWSandM24SWS.Thesedifferencesa

4、reasfollows:a.Thebarrelisgaugedandselectedtoensurecorrectspecificationtolerances.Theboreisnotchromiumplated.b.Thestockiswalnutandimpregnatedwithanepoxy.c.Thereceiverisindividuallycustomfittedtothestockwithafiberglasscompound.d.Thefiringmechanismisreworkedandpolishedtoprovideforacrisphamm

5、errelease.Triggerweightisbetween4.5to4.75pounds.e.Thesuppressorisfittedandreamedtoimproveaccuracyandeliminateanymisalignment.f.Thegascylinderandpistonarereworkedandpolishedtoimproveoperationandtoreducecarbonbuildup.g.Thegascylinderandlowerbandarepermanentlyattachedtoeachother.h.Otherpart

6、sarecarefullyselected,fitted,andassembled.B-1FM23-10B-2.INSPECTIONIfthesniperdiscoversadeficiencywhileinspectingtherifle,hereportsittotheunitarmorer.Thefollowingareasshouldbeinspected:a.Checktheappearanceandcompletenessofallparts.Shinysurfacesshouldbetreated.b.Checktheflashsuppressorform

7、isalignment,burrs,orevidenceofbullettipping.Thesuppressorshouldbetightonthebarrel.c.Checkthefrontsighttoensurethatitistight,thatthebladeissquare,andthatalledgesandcomersaresharp.d.Checkthegascylindertoensureitfitstightlyonthebarrel.Thegasplugshouldbefirmlytightened.e.Chec