johncurrie

Stock recoil weights are around 275 grams, the ones i produced for the ARS tube weighed in around 392 grams.

Tapped them all out to M3, If you need replacement screws drop me an email i will sort some out for you. The only downside so far with fitting the spectre for someone was the positive wire which i also joined just outside the gearbox as it would not run through the stock tube. Operation and response is very nice.

Puresilver, You may want to go down the same route i have with that recoil weight. Ditch the self tapping screws in the gearbox, re-thread the holes and fit machine screws with a small amount of loctite. They don't work loose then!