As long as there is no bounce (which occurs alot with the rocking trigger) it will be legal. Please see me upon arrival to make sure they will be legal for you to use.
that cant be legal the rules say 1 shot one pull for gpl if there are 2 activation points on the trigger that would equal 2 shots per one pull which is liek me using rebound mode on my dm5 virtue board which id ez be shooting 23bps one shot on the pull and one on the release
*edit* i just did my research and i guess the gun would be legal unless the trigger was over sensitive and when u made the bottom trigger pull when it would bounce back it would make the top activate that gun actually looks cool considering its a spyder lol but nvm i retract my above statement and i guess in theeory it is legal but idk if u can keept that from bouncing cause the refs will make that bounce lol