The Micro-Magg Rocket Kit is one of the Entry level of kits, which feature factory pre-slotted airframe and through-the-wall fin construction and high power motor capabilities. The MICRO MAGG is a stout performer with a 29mm motor tube and flies well on E-G power with Nylon Parachute Recovery. A 4″ version of our popular Mini Magg! Often replicated, never duplicated and our most affordable 4″ kit to date! Light enough for black powder, strong enough for composite 29mm motors!