BSA Airsporter & Mercury Piston Head Aluminum Part No. 162331

BSA Airsporter & Mercury Piston Head Aluminum

This spare fits the following models:

Airsporter MK 3

Airsporter MK 4

Airsporter Mk 5

Airsporter Mk 6

Airsporter Mk 7

Airsporter Centenary

Airsporter Stutzen

Airsporter S Carbine

Airsporter S Mk 3

Airsporter RB 2

Mercury Mk 1

Mercury Mk 2

Mercury Mk 3

Mercury Mk 4

Mercury S

Mercury Challenger

Mercury 635 Magnum