The 48" Super Magnum design is virtually unchanged from the original prototypes Bill Stewart (Bear Archery Bowyer), made in 1965. First offered for commercial sale to the public in early 1966, in Black Formica (advertised as a "High Compression material"), the riser has changed over the years, (mostly "Futurewood", resin impregnated hard rock maple with various colored stripes, etc.), but the dimensions, grip angle, etc. are pretty much the same. I have a new 2013 SM in reddish African Padauk. A classic hunting bow for brush & tree stands. It is a super slick and compact design, very light and responsive in the hand. I'm drawing over 29" and I have no issues with stacking or finger pinch, but I'm using a glove, not a tab. I sure wish Bear Archery would make another run off them in Black Formica!!!! ***HINT, HINT***!!!!!