spyder shutter- blue, x-core 8 stage expansion chamber, bandit bolts rear cock'n bolt, da boomstick- where would we be without them?, 12v revvy, sprint trigger frame
way more accurate, you never need oil, havent chopped a ball yet.
none that i can think of
i put the bolt in my gun and WOW Presto-Chango my gun was so much better. it shot a good 10 feet further. was way more accurate, shot grouping was like 7 inches diameter.it definatley made my gun more gas efficient, that stupid venturi bolt leaked like a dam, and was just garbage, i havent oiled the thing yet, and it still works like new. its sweet
all around a good upgrade to start with. but if your runnin a spyder anything all upgrades are great for it. so i give it two thumbs up.