Using the popular Boyd's AT-ONE stock as its basis" this 457 Varmint variant makes an ideal trainer for the whole family. With the push of a button" length of pull can be adjusted from 12.5"to 14.25". Comb height is similarly adjustable" with 5/8" of rise available. The stiff laminate stock provides a nice" rigid platform from which to work and the 16.5" threaded heavy barrel makes fitting a suppressor easy (1/2×28 threads).