Best SMG/Full-Auto Pistol for $200 or less

AEG Automatic Electric Gel Blaster
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I recently purchased the CYMA CQB M4 NF from TEH and I am looking for a sidearm/SMG that performs well OOTB (at least 150fps, decent ammo capacity) and is reliable in the sense that when I pull the trigger I can be confident that it will shoot. I will mostly use it for backyard skirmishes with friends so it doesn’t have to be the most amazing blaster ever. Any ideas? ( Thanks in advance)

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Thanks I was considering that as a possible option