10 sections (decades? I'm old and its been many years) per weapon, 1 EMER per weapon..... it would be unusual for a weapon not to have an EMER. Browning auto 5 shotgun, Walther PPk .22, Remington 870 shotgun, .22 Artillery training rifle..... just a few of the obscure weapons used by the BritishArmy all with EMERS. plus "policy and procedures for Armouries" THE bible for the true tradesman
https://www.milsurps.com/content.php...-Peter-Laidler)