I installed the Atlas trainer on my Molle pack frame and it works great. The bolts that come with (4) are designed for Outdoorsman frames and are too short for the Molle. So, I placed the baseplate on the inside of the Molle frame (strap side) and the mounting plate on the outside (where the Molle pack usually goes) through the center hole in the Molle frame. The Atlas bumper mount screws into the baseplate tight, without much need for reinforcements. Nonetheless, I used zipties in place of the bolts to add extra reinforcement. My molle frame with Atlas can easily handle 45-70 lbs dry (ie without a camel pack). It could probably do well over that. With the bumpers its quick and easy to configure your training weight and the weight centers perfectly for your natural center of gravity during ruck training. Great product. I will probably buy another one just to have an extra on hand. I spray painted the metal Atlas which also worked out perfectly. Thanks Outdoorsmans!