Another breath of fresh air from the usual M4-based blowback airsoft guns. This US$115.99 ACM MP5J at RSOV.com perhaps takes from where the Well MP5K GBB SMG left. This has metal parts, with the plastic parts being the handguard and lower frame. Depending on the weather, this can come out firing at 375fps out of the box. We wonder if the gas magazines from Well fit this and if they do, come the usual problems. No three-round burst option in the switch is found.