I have my first esee/rat a 3 with a izula on the way but they both seem a little small. The 3 is already on the vest and it fits nicely. I'm thinking of getting a 4 but I'm concerned it's so close to the 3 I'll be disappointed I didn't get a 6. But I'm afraid the 6 will be to big and I won't carry it much, and I already have a Swamp rat m-6 thats very close to the same size except thicker(more of a chopper). It's just a pain ordering without actually seeing them except pictures. Thanks for any input.