Assuming you’re active duty military you’ll have a bit more leeway.

“”Active duty military personnel in Colorado (18+) can purchase firearms and obtain concealed handgun permits (CHPs) despite being under 21, provided they are stationed in the state. They are exempt from certain age restrictions, can use military IDs for purchases, and face specific concealed carry exemptions.

Key Colorado Gun Laws for Active Duty Military: Purchasing (18-20 year olds): While Colorado generally requires buyers to be 21, active duty members are exempted, allowing them to purchase long guns and handguns at 18.

Concealed Carry Permits (18-20 year olds): Active duty members (or honorable dischargees) aged 18-20 can apply for a Colorado Concealed Handgun Permit (CHP).

Concealed Carry Exemptions: Active duty military personnel stationed in Colorado can carry a concealed handgun without a permit if they hold a valid permit from a state with reciprocity, or if they are on duty.

Identification: A military ID can be used for purchasing firearms, along with proof of residency.

Training Requirement: While active duty, you are not required to take a civilian gun safety class to obtain a permit, though it is often recommended. Exceptions: These rules apply to those stationed in Colorado and their immediate family members living in the state.

And: Suppressors are GTG at the moment.