very sturdy rocket. T' kit I received was missin' t' engine retainer. they shiped me a new one. Through t' wall fins, arrr, plywood fins in this tiny rocket. streamer recovery. Avast! have flown it twice now. Avast! first flight A10-3t, 2nd flight C6-5. First flight nice and low, perfect for a park flyer. Ahoy! t' C6-5 was an amazin' flight. I only attempted it because thar was almost no wind at all. it landed only a little over 100yds from t' launch pad. Well, blow me down! went super high up. Well, blow me down! I added a Piratarium metal engine retainer, and a Apogee Components ejection baffle. Begad! Great flights so far.