AR-15 Laws in Colorado
Last verified: April 8, 2026
This is not legal advice. Laws change frequently. Consult a licensed attorney and verify current federal, state, and local regulations before purchasing or building any firearm.
AR-15 Ownership
Assault Weapon Ban
Magazine Capacity Limit
Short Barreled Rifles (SBR)
Suppressors
Permit Required
Registration Required
Details
Magazine capacity limited to 15 rounds. AR-15 platform otherwise legal.
Buying in Colorado
| Background Check | State POC (CBI InstaCheck) |
| Waiting Period | None (instant) |
| Purchase Age | 18+ for long guns, 21+ for handguns |
| Permit to Purchase | No permit needed |
| Private Sale Background Check | Required (universal background check) |
Carry Laws
| Constitutional Carry | No |
| Concealed Carry Permit | Shall-issue |
| Open Carry | Legal |
AR pistols generally follow the same carry laws as handguns in Colorado. Verify with local law enforcement.
Local Preemption
Denver and Boulder have additional local restrictions including assault weapons bans. Check local ordinances carefully.
Check local ordinances in addition to state law before purchasing.
Neighboring States
How Colorado compares to its border states for AR-15 owners.
Laws last reviewed: April 2026. Always verify current laws before purchasing.
Compliant Rifles for Colorado
These rifles match Colorado's known restrictions based on magazine capacity. Always verify compliance with your local FFL dealer before purchasing.
Black Rain Ordnance BRO-22 22 Long 18in Sportsman Blued Semi Automatic Rifle - 10+1 Rounds
M&P 15-22 Sport M-Lok 22 Long Rifle Semi-Auto Rifle - M&P 15-22 M-Lok 22lr 16.5" Threaded Bbl (1)10rd Black
M&P 15-22 Sport M-Lok 22 Long Rifle Semi-Auto Rifle - M&P 15-22 M-Lok 22lr 16.5" Non-Threaded Bbl (1)10rd Black
Kel-Tec Sub2000 GEN3 9mm Luger 16.15in Black Semi Automatic Modern Sporting Rifle - 15+1 Rounds
Smith & Wesson, M&P15-22 AR, 22 LR, 16.5" Barrel, Black, Fixed 6 Position Stock, 10" M&P Slim Handguard with Magpul M-LOK, 10Rd, Magpul Flip up Rear Sight, CA Compliant
Kel-Tec SUB2000 GEN3 9mm Luger 16.15in Green Semi Automatic Modern Sporting Rifle - 15+1 Rounds
Build a Colorado-Compliant AR-15
Your Colorado build must have:
- Magazine capacity of 15 rounds or fewer
Ready to build?
Start configuring your Colorado-compliant AR-15 build.
Product Recommendation Disclaimer: These recommendations are based on our understanding of Colorado law as of April 30, 2026. Laws change. Always verify compliance with your local FFL dealer before purchasing. AR15 Outfitters is not a legal authority.
Disclaimer: This is not legal advice. This information is provided for educational purposes only. Laws change frequently. Always verify current regulations with your state legislature or a licensed attorney before purchasing, building, or possessing any firearm or firearm accessory.