Kythera SA Main Sear Switchboards • Double-needle bottom hem

• Double-needle bottom hem

measure these specific areas of the gearbox and input them into the following formula

It is not compatible with variants of the V2 gearbox which use a snap-action/microswitch trigger such as in the Ares V2 gearboxes

the inserts have more uses than just being paired with one of these stocks

the longer castle nut on the G28 interferes with the closing of the stock rail when the CO2 insert is being used instead of a 2

Kythera SA Main Sear Switchboards • Double-needle bottom hemYou want to try doing a fancy trigger job but don't want to take a chance of messing up your only sear? Pick up a spare! Original main sear used with all Kythera SA models. 4140 steel, gas nitride case hardened.