Gunpowder based nail guns for putting nails into concrete are definitely a thing. Additionally you can use certain attachments or rounds with guns for breachin

Gunpowder based nail guns for putting nails into concrete are definitely a thing. Additionally you can use certain attachments or rounds with guns for breaching doors. https://en.m.wikipedia.org/wiki/Breaching_round https://en.m.wikipedia.org/wiki/Breaching_round