First kit I built gettin' back into model rocketry. 

A unique feature o' this small diameter rocket be t' use o' an engine hook that mounts on t' outside o' t' body tube. 

There's no need for motor friction fittin' which can be tricky, me bucko, but shapin' t' fins around t' retention hook and rin' requires some careful knife work and sandin' t' achieve a clean look.