Does GunTab send annual 1099-K returns to IRS?

No, GunTab does not send 1099-K returns to the IRS like PayPal does. GunTab is not a “payment settlement entity” as defined in 26 USC § 6050W, so is not subject to that reporting requirement.

GunTab is not regulated the same way as PayPal because it is not the same type of company. GunTab is escrow whereas PayPal is a payment processor.