Designation:F2271−11(Reapproved2015)AnAmericanNationalStandardStandardSpecificationforPaintballMarkerBarrelBlockingDevices1ThisstandardisissuedunderthefixeddesignationF2271;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThisstandardisintendedtooutlinebasicperformancerequirementsforbarrelblockingdevices.Abarrelblockingdeviceisacriticalpieceofsafetyequipmentusedinthesportofpaintball.Paintballisasportthat,likeallsports,hasintrinsichazards.Thesehazardsincludebeinghitbypaintballs.Protectiveequipmentcannoteliminateallinjuriesbutwillsubstantiallyreducetheirseverityandfrequency.Abarrelblockingdeviceisanadditionalsafetydevicethat,whenmeetingthisstandardandproperlyused,cansubstantiallyreducetheseverityandfrequencyofinjuries.Paintballmarkerbarrelsarenotallthesameinsidediameter,thusnecessitatingperformancespecificationsforbarrelblockingdevicesthatmatchthebarrelblockingdevicetoabarreldiameter.Thisspecificationiswrittenwithinthecurrentstate-of-the-artofpaintballmarkerbarrelandpaintballbarrelblockingdevicetechnology.Theintentistorevisethisspecificationwheneversubstantiveinformationbecomesavailablewhichjustifiesrevisingexistingrequirementsoraddingnewrequirements.1.Scope1.1Thisspecificationcoverspaintballbarrelblockingde-vicesthatmaybeinsertedorotherwisefunctiontopreventapaintballfromleavingthemuzzleortheconfinesofthebarrelblockingdeviceintact.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareprovidedforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatoryrequirementspriortouse.2.ReferencedDocuments2.1ASTMStandards:2F1979Specificationfor...
