Gripster Hamster
The same hamster (palm shelf, knee rest etc.) design that I use on my own rifle, with 5, 6 or 7 big indents (183 / 217 / 251mm overall length) on the sides for a sure grip in kneeling position or when carrying the rifle.
High quality laser sintered Nylon, lightweight and strong material. Comes with stainless steel bolts and nuts.
Available in two versions (hamster only, or hamster + adapter).