muzzle

Definition of muzzle

The Front Sight May Not Project/Extend Beyond the Muzzle

- Definition of ‘Muzzle’ for IMSSU, International 1920 Match, PA 25 Yards Service Pistol and WA1500

The IMSSU, International 1920 Match, PA 25 Yards Service Pistol and WA1500 events contain categories with limits of the type “…the front sight may not project/extend beyond the muzzle…” (the relevant rules are given below).

There would appear to be some confusion in the minds of a few shooters as to the definition of the word ‘muzzle’; particularly when it comes to some strange and/or optimistic interpretation of the applicable rules in these events.

The word ‘muzzle’ has a long and specific application in relation events with ‘production’ category rules. The accepted (and reasonable) definition of the muzzle is ‘The muzzle of a firearm is the end of the barrel from which the projectile will exit’; further, ‘end of the barrel’ stands up well even when considering barrels that have a deep crowning, or been counter-bored (for whatever reason).

Any extension to the frame, slide or barrel is an extension and not the muzzle.

IMSSU

Production Pistol

…No part of the front sight post or blade (with the exception of a production hood) and no part of the optical device (with the exception of a production sun shade) may be located in front of the muzzle of the barrel…

Unlimited Pistol

…Barrel length is measured by inserting a rod down the barrel until it makes contact with

the bolt or breech face, then a straight edge placed horizontally across the muzzle of

the highest part of the crown.

NRA Action Pistol /International 1920 Match

3.2 Metallic Sight Firearm

…The front sight not to extend beyond the muzzle…

PA 25 Yards Service Pistol

S25/ 4.1.11

… the foresight shall not project further forward than the muzzle…

WA1500

(AUS) 4.2.1.4.