Yeah it is quite a challenging build..Was way over my head when I first tried to build it at age 12...lol..It uses ported exhaust for the ejection-that's the tricky part, getting the ports lined up properly..Nice thing with it- no wadding needed!

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Jon
SAM #0396
BAR 02/07
NAR 86940
KF4GUL
Aim high, fly straight!