I’ve been working with police gunlocks for 24 years now, and I have never seen anything that’s as adaptable as this. I can run everything from an 870 to a differently configured M16, to an AK, to just about anything you can think of. So far it’s the only rack we’ve ever seen that we can fit everything from an Eotech, to a T1, to a Comp M4 from the Aimpoint line, and it will clear wherever your rack is. And again, just about any configuration of an AR-15, M16 or an M4 pattern weapon, you will be able to mount regardless of your accessories. The versatility is just unmatched. Just about anything you can think of will work with this system it is universal in nature, and it is the model SC-5 that we use and we couldn’t be happier.