BSA Sear.

BSA Mercury & Airsporter Sear

This spare fits the following models:

Airsporter Mk 3

Airsporter Mk 6

Airsporter Mk 7

Airsporter Centenary

Airsporter RB2

Airsporter Stutzen

Airsporter S Carbine

Airsporter S Mk 3

Mercury Mk 2

Mercury Mk 3

Mercury Mk 4

Mercury S

Mercury Challenger

Mercury 365 Magnum