It is, it's just old-school as fuck, and for that reason, I approve adding Piccatany rails and making it swag. There is the AEK-999, but that's still basically a PKP abused to all shit.

The SMAW is reloadable actually- the Mk153 does have that detachable thing at the back, but still, the Carl Gustav is a great launcher, and an awesome one at that.