ASTM F2271-11(2015)
(Specification)Standard Specification for Paintball Marker Barrel Blocking Devices
Standard Specification for Paintball Marker Barrel Blocking Devices
SCOPE
1.1 This specification covers paintball barrel blocking devices that may be inserted or otherwise function to prevent a paintball from leaving the muzzle or the confines of the barrel blocking device intact.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are provided for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.
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Designation:F2271 −11 (Reapproved 2015) An American National Standard
Standard Specification for
Paintball Marker Barrel Blocking Devices
This standard is issued under the fixed designation F2271; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This standard is intended to outline basic performance requirements for barrel blocking devices. A
barrel 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 by
paintballs. Protective equipment cannot eliminate all injuries but will substantially reduce their
severity and frequency.Abarrel blocking device is an additional safety device that, when meeting this
standard and properly used, can substantially reduce the severity and frequency of injuries. Paintball
marker barrels are not all the same inside diameter, thus necessitating performance specifications for
barrel blocking devices that match the barrel blocking device to a barrel diameter. This specification
is written within the current state-of-the-art of paintball marker barrel and paintball barrel blocking
device technology.The intent is to revise this specification whenever substantive information becomes
available which justifies revising existing requirements or adding new requirements.
1. Scope 3. Terminology
1.1 This specification covers paintball barrel blocking de- 3.1 Definitions of Terms Specific to This Standard:
vices that may be inserted or otherwise function to prevent a 3.1.1 Paintball Marker Terms:—
paintball from leaving the muzzle or the confines of the barrel
3.1.1.1 auto-trigger—a trigger which, when held in the
blocking device intact.
discharge position, will automatically cause the paintball
marker to discharge when the pump or bolt action is manipu-
1.2 The values stated in SI units are to be regarded as the
lated.
standard. The inch-pound units given in parentheses are
provided for information only. 3.1.1.2 barrel—that portion of a paintball marker through
which the paintball is discharged.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1.1.3 barrel blocking device—asafetydevicethatprevents
responsibility of the user of this standard to establish appro- an intact paintball from being accidentally discharged from the
priate safety and health practices and determine the applica-
muzzle of the paintball marker or leaving the confines of the
bility of regulatory requirements prior to use. barrel blocking device.
3.1.1.4 burst mode marker—a burst mode marker may
2. Referenced Documents
discharge two or more times per trigger cycle or may discharge
2.1 ASTM Standards: two or more times with the pull and release of the trigger.
F1979 Specification for Paintballs Used in the Sport of
3.1.1.5 discharge mode—amodethatcontrolsthenumberof
Paintball
paintballs discharged per trigger cycle.
F2272 Specification for Paintball Markers
3.1.1.6 enhanced trigger mode marker—a paintball marker
that at some point discharges more than one paintball per
trigger cycle. This includes markers that “store” the number of
This specification is under the jurisdiction ofASTM Committee F08 on Sports
trigger.
Equipment, Playing Surfaces, and Facilitiesand is the direct responsibility of
Subcommittee F08.24 on Paintball and Equipment.
3.1.1.7 fully-automatic mode marker—a marker that dis-
Current edition approved April 1, 2015. Published August 2015. Originally
charges when the triggering device is actuated and continues to
approved in 2003. Last previous edition approved in 2011 as F2271 – 11. DOI:
discharge until the trigger returns to its reset or recycle
10.1520/F2271-11R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
position.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.1.1.8 modified fully automatic mode 1 marker—a semiau-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tomatic mode marker which, after the trigger is pulled at least
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2271−11 (2015)
three times within 1 s, is able to function in a fully automatic 7. Test Methods
mode with a firing rate not to exceed 15 shots per second until
7.1 No precision statement on any of the following test
the trigger is released.
methods is available at this time.
3.1.1.9 modified burst mode 2 marker—a semi-automatic
7.2 Barrel Blocking Device Retention Test:
mode marker which, after the trigger is pulled at least three
7.2.1 Significance—This method is performed to ensure that
times within 1 s, is able to cycle more than one time per trigger
the barrel blocking device will remain in or over the barrel and
pull with a firing rate not to exceed 15 shots per second.
prevent an intact paintball or shell fragment equal to or greater
3.1.1.10 muzzle—the end of the barrel at which the ball exits than 3 mm (0.118 in.) by 5 mm (0.196 in.) from exiting the
muzzle or the confines of the barrel blocking device.
the barrel.
7.2.2 Apparatus:
3.1.1.11 muzzle diameter—the inside barrel diameter as
7.2.2.1 Paintball Marker, capable of hurling paintballs hori-
measured at the muzzle.
zontally at a speed of 100.6 6 6 m/s (330 6 20 f/s) per
3.1.1.12 paintball—a spherical ball, commonly with a di-
Specification F2272.
ameter of 17.3 mm (0.68 in.), comprised of a shell and a fill,
7.2.2.2 Paintballs, per Specification F1979.
designed to be expelled from a paintball marker and conform-
7.2.2.3 Barrel Blocking Device.
ing to Specification F1979.
7.2.2.4 Appropriate Backstop.
7.2.2.5 Equipment employed to measure the speed of the
3.1.1.13 paintball marker—a device specifically designed to
test paintball shall be used in accordance with the manufactur-
discharge paintballs.
er’s instructions to measure the velocity of paintballs and shall
3.1.1.14 pump mode marker—a marker that requires the
be accurate to within 60.5 m/s (61.6 ft/s) muzzle velocity.
operator to manually cock or engage the sear of the marker
7.2.3 Conditioning:
before each shot by a means of a pump, bolt, lever, cocking
7.2.3.1 All testing shall be done using paintballs manufac-
handle, or similar device.
tured according to Specification F1979.
3.1.1.15 semi-automatic mode marker—a semi-automatic
7.2.3.2 Paintball storage and the non-test handling shall be
marker discharges one time with each trigger cycle. Markers
done at a relative humidity below 65 % and at SAT.
that “store” the number of trigger pulls and discharge more
7.2.3.3 Paintballs shall be conditioned in their original
than one paintball at some point do not meet this definition.
sealedcontainerforatleast4hatthehumidityandtemperature
Markers that operate in any other discharge mode(s) do not
specified in 7.2.3.2.
meet this definition.
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F2271 − 11 F2271 − 11 (Reapproved 2015) An American National Standard
Standard Specification for
Paintball Marker Barrel Blocking Devices
This standard is issued under the fixed designation F2271; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This standard is intended to outline basic performance requirements for barrel blocking devices. A
barrel 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 by
paintballs. Protective equipment cannot eliminate all injuries but will substantially reduce their
severity and frequency. A barrel blocking device is an additional safety device that, when meeting this
standard and properly used, can substantially reduce the severity and frequency of injuries. Paintball
marker barrels are not all the same inside diameter, thus necessitating performance specifications for
barrel blocking devices that match the barrel blocking device to a barrel diameter. This specification
is written within the current state-of-the-art of paintball marker barrel and paintball barrel blocking
device technology. The intent is to revise this specification whenever substantive information becomes
available which justifies revising existing requirements or adding new requirements.
1. Scope
1.1 This specification covers paintball barrel blocking devices that may be inserted or otherwise function to prevent a paintball
from leaving the muzzle or the confines of the barrel blocking device intact.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are provided for
information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
requirements prior to use.
2. Referenced Documents
2.1 ASTM Standards:
F1979 Specification for Paintballs Used in the Sport of Paintball
F2272 Specification for Paintball Markers
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 Paintball Marker Terms:—
3.1.1.1 auto-trigger—a trigger which, when held in the discharge position, will automatically cause the paintball marker to
discharge when the pump or bolt action is manipulated.
3.1.1.2 barrel—that portion of a paintball marker through which the paintball is discharged.
3.1.1.3 barrel blocking device—a safety device that prevents an intact paintball from being accidentally discharged from the
muzzle of the paintball marker or leaving the confines of the barrel blocking device.
This specification is under the jurisdiction of ASTM Committee F08 on Sports Equipment, Playing Surfaces, and Facilitiesand is the direct responsibility of Subcommittee
F08.24 on Paintball and Equipment.
Current edition approved March 1, 2011April 1, 2015. Published March 2011August 2015. Originally approved in 2003. Last previous edition approved in 20102011 as
F2271 – 10.F2271 – 11. DOI: 10.1520/F2271-11.10.1520/F2271-11R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2271 − 11 (2015)
3.1.1.4 burst mode marker—a burst mode marker may discharge two or more times per trigger cycle or may discharge two or
more times with the pull and release of the trigger.
3.1.1.5 discharge mode—a mode that controls the number of paintballs discharged per trigger cycle.
3.1.1.6 enhanced trigger mode marker—a paintball marker that at some point discharges more than one paintball per trigger
cycle. This includes markers that “store” the number of trigger.
3.1.1.7 fully-automatic mode marker—a marker that discharges when the triggering device is actuated and continues to
discharge until the trigger returns to its reset or recycle position.
3.1.1.8 modified fully automatic mode 1 marker—a semiautomatic mode marker which, after the trigger is pulled at least three
times within 1 s, is able to function in a fully automatic mode with a firing rate not to exceed 15 shots per second until the trigger
is released.
3.1.1.9 modified burst mode 2 marker—a semi-automatic mode marker which, after the trigger is pulled at least three times
within 1 s, is able to cycle more than one time per trigger pull with a firing rate not to exceed 15 shots per second.
3.1.1.10 muzzle—the end of the barrel at which the ball exits the barrel.
3.1.1.11 muzzle diameter—the inside barrel diameter as measured at the muzzle.
3.1.1.12 paintball—a spherical ball, commonly with a diameter of 17.3 mm (0.68 in.), comprised of a shell and a fill, designed
to be expelled from a paintball marker and conforming to Specification F1979.
3.1.1.13 paintball marker—a device specifically designed to discharge paintballs.
3.1.1.14 pump mode marker—a marker that requires the operator to manually cock or engage the sear of the marker before each
shot by a means of a pump, bolt, lever, cocking handle, or similar device.
3.1.1.15 semi-automatic mode marker—a semi-automatic marker discharges one time with each trigger cycle. Markers that
“store” the number of trigger pulls and discharge more than one paintball at some point do not meet this definition. Markers that
operate in any other discharge mode(s) do not meet this definition.
3.1.1.16 standard ambient temperature (SAT)—used to describe a substance at a temperature of 25 6 2°C (77 6 4°F).
4. Significance and Use
4.1 This specification establishes performance requirements and test methods to provide a reasonable degree of safety in the
normal use of barrel blocking devices in paintball markers.
5. Conformance
5.1 Barrel blocking devices shall not, either by label or other means, indicate conformance with this specification unless they
conform to all applicable requirements contained herein.
6. General Requirements
6.1 Performance—Upon any discharge of a paintball from a paintball marker with a barrel blocking device properly installed
according to the manufacturer’s instructions, the barrel blocking device must remain inserted or over the muzzle and prevent an
intact paintball from exiting the muzzle or the confines of the muzzle blocking device. Tests shall be conducted in accordance with
7.2.
6.2 All barrel blocking devices shall completely cover or block the exit orifice of the barrel. Some barrel blocking devices make
use of a vent port that allows the release of excess pressure in the barrel of the marker. The total calculated area of all ports of
this type in any barrel b
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