Kind of silly if you ask me, unless you also plan to use an MQ valve. (which is also rather silly.)
The only advantage to running just an E-trigger, no MQ valve, is having an electro trigger pull. Hardly worth doing for a pump gun. At least with an MQ you don't have to compress a hammer spring or move a hammer, so you can have a really light pump stroke as well.
Heh... that gun can't even function the way it's set up.
mQ'ing a sniper is one of the single best ways to make it quieter. In fact, the quietest gun I've ever heard was a mQed sniper I built. Unfortunately, the wires to the solenoid broke (used valve) so I can't demonstrate it.
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