The EGW® USPSA® Magazine Gauge gives competitors, Range Officers, gunsmiths, and match staff a consistent way to check competition-magazine length. It measures both commonly referenced 140mm and 170mm magazine configurations, including the installed base pad.
Current USPSA® rules identify the EGW® mag gauge as the primary magazine-measuring device. Keeping one in your range bag or workshop lets you check your magazine and base-pad combinations before arriving at equipment inspection.
The Primary USPSA® Magazine-Measuring Device
USPSA® Appendix E1 specifies the EGW® mag gauge as the primary device for checking magazine length and gauge conformity.
Two Magazine-Length Limits in One Gauge
140mm Magazines
141.25mm / 5.561"
Checks magazine and base-pad combinations against the commonly referenced 140mm limit.
170mm Magazines
171.25mm / 6.742"
Checks magazine and base-pad combinations against the commonly referenced 170mm limit.
Why Use the EGW® USPSA® Mag Gauge?
Identified by USPSA® rules as the primary magazine-measuring device
Checks both 141.25mm and 171.25mm magazine-length limits
Measures the complete magazine and installed base pad
CNC machined from 6061 aluminum
Black anodized finish
Useful for competitors, Range Officers, clubs, match staff, and gunsmiths
Compact enough to keep in a range bag or on a workbench
How to Check a Magazine
Confirm that the magazine is unloaded.
Select the appropriate 141.25mm or 171.25mm side of the gauge.
Place the complete magazine and installed base pad into the gauge.
Position the magazine so the back is flush against the gauge.
Allow the magazine to rest in the gauge without significant force or compression.
Confirm that the magazine conforms to the required length and gauge profile.
Important: Passing a pre-match check with this gauge does not guarantee that all equipment complies with every requirement of a USPSA® division. Always review the current division rules. If a magazine measurement or procedure is questioned at a match, the Range Master has final authority.
Handy object to have if you need to check your mags before a big match
5
Works
Posted by John on Mar 21st 2016
Depressed that it tells me that I can't use the SNL base pads with my mag bodies.
But it's great to know for sure.
5
It's best to know
Posted by Ernie E. on Mar 7th 2016
Using SNL tool-less base pads ( Dawson ) being new to the game
( Sport ) I need every round I can get into a mag legally
Cause I want to play fair and this is one of the tools to help
give You peace of mind with no guessing
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