ASTM F2271-11(2023)
(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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F2271 − 11 (Reapproved 2023) 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 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification covers paintball barrel blocking de-
vices that may be inserted or otherwise function to prevent a F1979 Specification for Projectiles Used in the Sport of
Paintball
paintball from leaving the muzzle or the confines of the barrel
blocking device intact. F2272 Specification for Paintball Markers
1.2 The values stated in SI units are to be regarded as the
3. Terminology
standard. The inch-pound units given in parentheses are
3.1 Definitions of Terms Specific to This Standard:
provided for information only.
3.1.1 Paintball Marker Terms:—
1.3 This standard does not purport to address all of the
3.1.1.1 auto-trigger—a trigger which, when held in the
safety concerns, if any, associated with its use. It is the
discharge position, will automatically cause the paintball
responsibility of the user of this standard to establish appro-
marker to discharge when the pump or bolt action is manipu-
priate safety, health, and environmental practices and deter-
lated.
mine the applicability of regulatory limitations prior to use.
3.1.1.2 barrel—that portion of a paintball marker through
1.4 This international standard was developed in accor-
which the paintball is discharged.
dance with internationally recognized principles on standard-
3.1.1.3 barrel blocking device—a safety device that prevents
ization established in the Decision on Principles for the
an intact paintball from being accidentally discharged from the
Development of International Standards, Guides and Recom-
muzzle of the paintball marker or leaving the confines of the
mendations issued by the World Trade Organization Technical
barrel blocking device.
Barriers to Trade (TBT) Committee.
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.
This specification is under the jurisdiction of ASTM Committee F08 on Sports
Equipment, Playing Surfaces, and Facilities and is the direct responsibility of
Subcommittee F08.24 on Paintball and Equipment. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2023. Published April 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2003. Last previous edition approved in 2019 as F2271 – 11 (2019). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/F2271-11R23. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2271 − 11 (2023)
3.1.1.5 discharge mode—a mode that controls the number of stalled according to the manufacturer’s instructions, the barrel
paintballs discharged per trigger cycle. blocking device must remain inserted or over the muzzle and
prevent an intact paintball from exiting the muzzle or the
3.1.1.6 enhanced trigger mode marker—a paintball marker
confines of the muzzle blocking device. Tests shall be con-
that at some point discharges more than one paintball per
ducted in accordance with 7.2.
trigger cycle. This includes markers that “store” the number of
trigger.
6.2 All barrel blocking devices shall completely cover or
block the exit orifice of the barrel. Some barrel blocking
3.1.1.7 fully-automatic mode marker—a marker that dis-
devices make use of a vent port that allows the release of
charges when the triggering device is actuated and continues to
excess pressure in the barrel of the marker. The total calculated
discharge until the trigger returns to its reset or recycle
area of all ports of this type in any barrel blocking device must
position.
less than 15 mm .
3.1.1.8 modified fully automatic mode 1 marker—a semiau-
tomatic mode marker which, after the trigger is pulled at least
7. Test Methods
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
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
than 3 mm (0.118 in.) by 5 mm (0.196 in.) from exiting the
3.1.1.10 muzzle—the end of the barrel at which the ball exits
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.
3.1.1.13 paintball marker—a device specifically designed to
7.2.2.5 Equipment employed to measure the speed of the
discharge paintballs.
test paintball shall be used in accordance with the manufactur-
3.1.1.14 pump mode marker—a marker that requires the
er’s instructions to measure the velocity of paintballs and shall
operator to manually cock or engage the sear of the marker b
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