1、Designation: F2271 11 (Reapproved 2015) An American National StandardStandard Specification forPaintball Marker Barrel Blocking Devices1This standard is issued under the fixed designation F2271; the number immediately following the designation indicates the year oforiginal adoption or, in the case o
2、f revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis standard is intended to outline basic performance requirements for barrel blocking device
3、s. Abarrel blocking device is a critical piece of safety equipment used in the sport of paintball.Paintball is a sport that, like all sports, has intrinsic hazards. These hazards include being hit bypaintballs. Protective equipment cannot eliminate all injuries but will substantially reduce theirsev
4、erity and frequency. A barrel blocking device is an additional safety device that, when meeting thisstandard and properly used, can substantially reduce the severity and frequency of injuries. Paintballmarker barrels are not all the same inside diameter, thus necessitating performance specifications
5、 forbarrel blocking devices that match the barrel blocking device to a barrel diameter. This specificationis written within the current state-of-the-art of paintball marker barrel and paintball barrel blockingdevice technology. The intent is to revise this specification whenever substantive informat
6、ion becomesavailable which justifies revising existing requirements or adding new requirements.1. Scope1.1 This specification covers paintball barrel blocking de-vices that may be inserted or otherwise function to prevent apaintball from leaving the muzzle or the confines of the barrelblocking devic
7、e intact.1.2 The values stated in SI units are to be regarded as thestandard. The inch-pound units given in parentheses areprovided for information only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of th
8、is standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.2. Referenced Documents2.1 ASTM Standards:2F1979 Specification for Paintballs Used in the Sport ofPaintballF2272 Specification for Paintball Markers3. Terminolog
9、y3.1 Definitions of Terms Specific to This Standard:3.1.1 Paintball Marker Terms:3.1.1.1 auto-triggera trigger which, when held in thedischarge position, will automatically cause the paintballmarker to discharge when the pump or bolt action is manipu-lated.3.1.1.2 barrelthat portion of a paintball m
10、arker throughwhich the paintball is discharged.3.1.1.3 barrel blocking devicea safety device that preventsan intact paintball from being accidentally discharged from themuzzle of the paintball marker or leaving the confines of thebarrel blocking device.3.1.1.4 burst mode markera burst mode marker ma
11、ydischarge two or more times per trigger cycle or may dischargetwo or more times with the pull and release of the trigger.3.1.1.5 discharge modea mode that controls the number ofpaintballs discharged per trigger cycle.3.1.1.6 enhanced trigger mode markera paintball markerthat at some point discharge
12、s more than one paintball pertrigger cycle. This includes markers that “store” the number oftrigger.3.1.1.7 fully-automatic mode markera marker that dis-charges when the triggering device is actuated and continues todischarge until the trigger returns to its reset or recycleposition.3.1.1.8 modified
13、 fully automatic mode 1 markera semiau-tomatic mode marker which, after the trigger is pulled at least1This specification is under the jurisdiction of ASTM Committee F08 on SportsEquipment, Playing Surfaces, and Facilitiesand is the direct responsibility ofSubcommittee F08.24 on Paintball and Equipm
14、ent.Current edition approved April 1, 2015. Published August 2015. Originallyapproved in 2003. Last previous edition approved in 2011 as F2271 11. DOI:10.1520/F2271-11R15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Ann
15、ual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1three times within 1 s, is able to function in a fully automaticmode with a
16、firing rate not to exceed 15 shots per second untilthe trigger is released.3.1.1.9 modified burst mode 2 markera semi-automaticmode marker which, after the trigger is pulled at least threetimes within 1 s, is able to cycle more than one time per triggerpull with a firing rate not to exceed 15 shots
17、per second.3.1.1.10 muzzlethe end of the barrel at which the ball exitsthe barrel.3.1.1.11 muzzle diameterthe inside barrel diameter asmeasured at the muzzle.3.1.1.12 paintballa spherical ball, commonly with a di-ameter of 17.3 mm (0.68 in.), comprised of a shell and a fill,designed to be expelled f
18、rom a paintball marker and conform-ing to Specification F1979.3.1.1.13 paintball markera device specifically designed todischarge paintballs.3.1.1.14 pump mode markera marker that requires theoperator to manually cock or engage the sear of the markerbefore each shot by a means of a pump, bolt, lever
19、, cockinghandle, or similar device.3.1.1.15 semi-automatic mode markera semi-automaticmarker discharges one time with each trigger cycle. Markersthat “store” the number of trigger pulls and discharge morethan one paintball at some point do not meet this definition.Markers that operate in any other d
20、ischarge mode(s) do notmeet this definition.3.1.1.16 standard ambient temperature (SAT)used to de-scribe a substance at a temperature of 25 6 2C (77 6 4F).4. Significance and Use4.1 This specification establishes performance requirementsand test methods to provide a reasonable degree of safety in th
21、enormal use of barrel blocking devices in paintball markers.5. Conformance5.1 Barrel blocking devices shall not, either by label or othermeans, indicate conformance with this specification unlessthey conform to all applicable requirements contained herein.6. General Requirements6.1 PerformanceUpon a
22、ny discharge of a paintball from apaintball marker with a barrel blocking device properly in-stalled according to the manufacturers instructions, the barrelblocking device must remain inserted or over the muzzle andprevent an intact paintball from exiting the muzzle or theconfines of the muzzle bloc
23、king device. Tests shall be con-ducted in accordance with 7.2.6.2 All barrel blocking devices shall completely cover orblock the exit orifice of the barrel. Some barrel blockingdevices make use of a vent port that allows the release ofexcess pressure in the barrel of the marker. The total calculated
24、area of all ports of this type in any barrel blocking device mustless than 15 mm2.7. Test Methods7.1 No precision statement on any of the following testmethods is available at this time.7.2 Barrel Blocking Device Retention Test:7.2.1 SignificanceThis method is performed to ensure thatthe barrel bloc
25、king device will remain in or over the barrel andprevent an intact paintball or shell fragment equal to or greaterthan 3 mm (0.118 in.) by 5 mm (0.196 in.) from exiting themuzzle or the confines of the barrel blocking device.7.2.2 Apparatus:7.2.2.1 Paintball Marker, capable of hurling paintballs hor
26、i-zontally at a speed of 100.6 6 6 m/s (330 6 20 f/s) perSpecification F2272.7.2.2.2 Paintballs, per Specification F1979.7.2.2.3 Barrel Blocking Device.7.2.2.4 Appropriate Backstop.7.2.2.5 Equipment employed to measure the speed of thetest paintball shall be used in accordance with the manufactur-er
27、s instructions to measure the velocity of paintballs and shallbe accurate to within 60.5 m/s (61.6 ft/s) muzzle velocity.7.2.3 Conditioning:7.2.3.1 All testing shall be done using paintballs manufac-tured according to Specification F1979.7.2.3.2 Paintball storage and the non-test handling shall bedo
28、ne at a relative humidity below 65 % and at SAT.7.2.3.3 Paintballs shall be conditioned in their originalsealed container for at least4hatthehumidity and temperaturespecified in 7.2.3.2.7.2.3.4 The barrel shall be conditioned for at least4hatSAT.7.2.3.5 The testing shall be conducted at the temperat
29、uresspecified in 7.2.3.2 and shall be completed within 10 min afterremoval of the paintball from the sealed container. Thepaintball container shall be resealed immediately after eachpaintball is removed.7.2.3.6 The barrel blocking device to be tested will beconditioned for at least4hatSAT.7.2.4 Test
30、 Specimen:7.2.4.1 The test specimen shall consist of a barrel blockingdevice properly installed into or over the muzzle.7.2.5 Procedure:7.2.5.1 Conduct the test at SAT.7.2.5.2 The barrel is attached to the paintball marker inaccordance with the barrel and paintball marker manufacturersinstructions.7
31、.2.5.3 Standard Velocity Test: The paintball marker shallbe adjusted so that the velocity of a paintball discharged fromthe marker would be 100.6 6 6 m/s (330 6 20 ft/s) whenmeasured within 1 m (3.3 ft) of the muzzle.7.2.5.4 The muzzle shall be immersed in paintball fillmaterial for 30 6 5 s at a mi
32、nimum depth of 2.5 cm (1 in.)beyond the maximum point of insertion of the barrel blockingdevice. Upon removal from the fill material, the barrel will behung vertically with the muzzle down for 30 6 5s.7.2.5.5 Install a new unused barrel blocking device accord-ing to manufacturers instructions.7.2.5.
33、6 Placing the end of the barrel and blocking deviceinto a clean container that is devoid of all paintball shell and fillF2271 11 (2015)2materials, discharge paintballs into the barrel blocking device,firing a volley of three paintballs per second, repeating this twotimes for a total of 6 paintballs
34、fired, with 5 s between volleys.7.2.5.7 Observe the test container for signs of a paintballbreaching the barrel blocking device. Inspect the barrel block-ing device for signs of damage or physical failure.Any signs ofeither will result in a failure for this test.7.2.5.8 High Velocity Test: The paint
35、ball marker shall beadjusted so that the velocity of a paintball discharged from themarker would be (410 6 20 ft/s) when measured within 1 m(3.3 ft) of the muzzle.7.2.5.9 The muzzle shall be immersed in paintball fillmaterial for 30 6 5 s at a minimum depth of 2.5 cm (1 in.)beyond the maximum point
36、of insertion of the barrel blockingdevice. Upon removal from the fill material, the barrel will behung vertically with the muzzle down for 30 6 5s.7.2.5.10 Install a new unused barrel blocking device accord-ing to manufacturers instructions.7.2.5.11 Placing the end of the barrel and blocking devicei
37、nto a clean container that is devoid of all paintball shell and fillmaterials, discharge one paintball into the barrel blockingdevice.7.2.5.12 Observe the test container for signs of a paintballbreaching the barrel blocking device. Inspect the barrel block-ing device for signs of damage or physical
38、failure.Any signs ofeither will result in a failure for this test.8. Identification of Manufacturer8.1 SignificanceEvery barrel blocking device shall con-tain a permanent, printed indicia, identifying the manufacturer(or distributor), and including contact information.8.1.1 This indicia shall be pri
39、nted in English, in a minimum8 point, font.8.1.2 This indicia shall be printed in a conspicuous locationon the barrel blocking device.9. Inclusion of Instruction Manual9.1 SignificanceBarrel blocking devices come in manydesigns, with most designs requiring a certain amount ofadjustment/fitment to ea
40、ch marker in order for the device tofunction effectively. It is recommended that every barrelblocking device being sold individually to the end user includea users manual outlining the proper installation and usage ofthe device as detailed below.9.2 Users Manual Specifications:9.2.1 The users manual
41、 may be included in various formatssuch as permanently printed directly onto the device itself, anaccompanying pamphlet, an instruction sheet, or included onthe product packaging.9.2.2 Instructions must be printed in a minimum 8 pointfont.9.2.3 The minimum instructions included with a barrelblocking
42、 device will be: how to properly install and use thedevice.9.2.4 At the manufacturers discretion additional informa-tion may be included with the barrel blocking device includingbut not limited to adjustment of the barrel blocking device,how to inspect the device for wear or damage, proper cleaninga
43、nd storage of the barrel blocking device.10. Keywords10.1 paintball; paintball barrel blocking devices; paintballbarrel plugs; paintball markers; paintball sportsASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this st
44、andard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be rev
45、iewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsi
46、ble technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West C
47、onshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 11 (2015)3
