I'm not familiar with the unit, so it has no relation. Though it does remind me of something, I just can't point my finger on what.
Its scale as seen on the pictures is on 0.5, as the HW1 Defenders have it. Though that alone isn't a definitive similarity, the size of the HW1 Defender itself may be smaller, I didn't check yet.
Yeah, that's the reason I'm not scaling them down just yet, even though from up close they really look like I should. I have to compare with other strikecraft from a distance first.
Accidental similarities don't bother me.