The rifle features a fully adjustable buttstock and cheek riser. The buttstock is fully adjustable in length and height and features a variable-height cheek riser. This move eliminated the riser pipes completely. They are the stringer, the tread and the riser. A detachable cheek riser is employed when using optics. Riser pads are normally made of plastic. At the top of the riser area is the moisture separator. The fire requirements on riser cable are not as strict. One is using an insulating sleeve and top around the riser. Each step is composed of tread and riser. He specified that 2 x riser + tread = step length. Another is placing a heater around only the riser. Tucker also used two projection screens that were above his drum riser. The "regenerated" catalyst then flows to the base of the riser, repeating the cycle. The band sat on the drum riser and watched.