Just ordered one of these to change out the old Frame on my Hellcat Med. Alice pack. http://www.downeastinc.com/Products.php/Products.php/?Link=1606AC I have read reviews from several people that say this conversion is well worth the money and effort. The new frame is lighter, more comfortable, and distributes the weight better across your back and hips. Here is a picture: I'll post more pics and let you guys know what I think after I get mine changed out.