Only One command Shotgun Bow

That's it a update of the My shotgun bow

1.9 Snapshot needed !!! 

HERE IS COMMAND \/ \/ \/

summon FallingSand ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:FallingSand,Block:redstone_block,Time:1,Passengers:{id:FallingSand,Block:activator_rail,Time:1,Passengers:{id:MinecartCommandBlock,Command:gamerule commandBlockOutput false},{id:MinecartCommandBlock,Command:"fill ~2 ~-3 ~-1 ~9 ~-1 ~2 glowstone 0 hollow"},{id:MinecartCommandBlock,Command:"fill ~2 ~-2 ~-1 ~9 ~-2 ~2 stained_glass 13 replace glowstone"},{id:MinecartCommandBlock,Command:"/tellraw @a {\"text\":\"Machine is fully assembled!Thanks for using​\",\"color\":\"dark_green\"}"},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~ wall_sign 4 replace {Text1:"{\\\"text\\\":\\\"The Explosive Bow\\\",\\\"color\\\":\\\"green\\\",\\\"italic\\\":true,\\\"bold\\\":true}",Text2:"{\\\"text\\\":\\\"By Guest_007\\\",\\\"color\\\":\\\"red\\\",\\\"italic\\\":true,\\\"bold\\\":true}"}},{id:MinecartCommandBlock,Command:"summon ArmorStand ~3 ~-2 ~ {CustomName:TogAct,Marker:1,NoGravity:1,Invisible:1}"},{id:MinecartCommandBlock,Command:"scoreboard objectives add _A dummy"},{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~1 chain_command_block 12 replace {auto:1,Command:"/execute @p ~ ~ ~ particle Explode ~ ~ ~ 2 2 2 0 10"}},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~1 chain_command_block 12 replace {auto:1,Command:"/effect @p minecraft:slowness 1 5"}},{id:MinecartCommandBlock,Command:setblock ~8 ~-2 ~1 chain_command_block 4 replace {auto:1,Command:":/testfor @etype=Arrow]"}},{id:MinecartCommandBlock,Command:setblock ~8 ~-2 ~ chain_command_block 3 replace {undefinedCommand:""}},{id:MinecartCommandBlock,Command:setblock ~7 ~-2 ~ chain_command_block 13 replace {auto:1,Command:"/kill @e[type=Arrow]"}},{id:MinecartCommandBlock,Command:setblock ~6 ~-2 ~ chain_command_block 13 replace {auto:1,Command:"/execute @e[type=Arrow] ~ ~ ~ summon PrimedTnt ~ ~ ~"}},{id:MinecartCommandBlock,Command:setblock ~5 ~-2 ~ chain_command_block 5 replace {auto:1,Command:"/testfor @e[type=Arrow] {inGround:1b}"}},{id:MinecartCommandBlock,Command:setblock ~4 ~-2 ~ chain_command_block 5 replace {auto:1,Command:"/execute @e[type=Arrow] ~ ~ ~ particle flame ~ ~ ~ 0 0 0 0 10"}},{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~ repeating_command_block 5 replace {auto:1,Command:"/execute @e[type=Arrow] ~ ~ ~ particle smoke ~ ~ ~ 0 0 0 0 10"}},{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 replace {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block},{id:MinecartCommandBlock,Command:kill @e[type=MinecartCommandBlock,r=1]}]}]}]}