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