Flans Mod has no guns normally it's an API that alows mods to function. You need to install content packs compatible with the flans API to get guns and other weapons. You can find most of them here http://flansmod.com/content-packs I recomend the modern weapons pack to get you started.
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When angry, count to four; when very angry, swear. Samuel Langhorne Clemens
Do you mean that you can't see the guns in your creative tab or that the NEI recipe won't show? Also which packs are you using? Many of them are unstable or incomplete.
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When angry, count to four; when very angry, swear. Samuel Langhorne Clemens
I've been able to replicate your problem in my game but I can't seem to find the solution. The guns are present and enabled in the configs but they don't appear in game. The best that I can suggest is to try other content packs to find some that work fully. Sorry that i can't be of more help.
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When angry, count to four; when very angry, swear. Samuel Langhorne Clemens
When angry, count to four; when very angry, swear. Samuel Langhorne Clemens
When angry, count to four; when very angry, swear. Samuel Langhorne Clemens
When angry, count to four; when very angry, swear. Samuel Langhorne Clemens
When angry, count to four; when very angry, swear. Samuel Langhorne Clemens