For a very long time, GORUCK has sold a ‘slick’ version of the GR1 in random spurts — the GR1 of course is the world’s best backpack. The Slick version of it was/is the exact same as a standard GR1 with four main differences:
- No MOLLE on the front and sides of the bag.
- No morale patch velcro area.
- No MOLLE/Daisy Chain (the vertical nylon webbing chain) on the shoulder straps.
- No hydration hose pass through under the top handle.
Everything else about the backpack is the same. Originally this variant was called “SK” instead of Slick (you had SK26 for a GR1 26L, and SK40 for the GR2 40L), but the bag is the same as the GR1 and those which are labeled GR1 Slick (most commonly found on Huckberry) now days. I reviewed the SK26 here and a friend also reviewed it here — I always found that black SK26 lacking. I didn’t like the bland nature that these changes lead to.