Magpul Mossberg SGA vs Remington SGA for the 1301

[GearFondler]

I just measured my GGG it’s .70”. Can someone with an Aridus measure it?

I can't be 100% measuring it already installed but I'm getting approximately 13/32" (0.406") or 1cm.
0.3" is way more than enough to feel very different to one's hand.

[Pnut]

Just for reference sake, here’s how got my measurement…