Training
1 upcoming class / 9 programs
Concentric Lines Defense
Shooting Range in Ellicott, CO
Concentric Lines Defense, LLC offers high-quality, confidential firearms training and gunsmith services in Calhan, CO, led by Eugene (Geno) Shaw — a USCCA-certified chief instructor and former school principal who thwarted a planned mass shooting.
- Phone
- 248-842-8169
- Website
- concentriclinesdefense.net
- Directions
- Open map directions
Range details
1 lane / 300 yd max / 2 range areas
Public access listed
Gunsmithing
1 service
Mobile
Quick Answers
What kind of range is it?
Public access
- Outdoor pistol, rifle, shotgun, rimfire range with 1 lane, up to 300 yards
- 300 yard maximum listed distance
Are classes listed?
1 dated class, 8 course offerings
What gunsmith services are listed?
Custom builds
Classes and Training Programs
Upcoming Classes
Class CCW Defensive
Michigan Concealed Pistol License
- Price
- $100
8 Hours. This course complies with the state Michigan requirements for concealed carry, including 5 hours of classroom instruction, and 3 hours of range instruction. This is a comprehensive defensive course, and as such it is impossible to list the full depth and width of content instructed. Absolutely no prior knowledge or experience with firearms is requir...
Training Programs
Course Beginner
Glock Basic Handgun
- Duration
- 2 hours
In-depth study of Glock handguns with 2 hours of academic learning and optional range time. Covers operation, safety, maintenance, and practical use.
Course
Glock Certified Armorer
- Duration
- 1 hour
Complete disassembly, cleaning, inspection, reassembly and certification of any model of Glock (excluding G18), Gen 1 through Gen 5. Certificate issued confirming factory original and performing to factory specs.
Course Beginner
AR-15 Basic Pistol, Carbine & Rifle
- Duration
- Unknown
Appropriate for beginners with no experience to limited experience. Covers AR-15 platform fundamentals including operation, maintenance, and customization.
Course
AR-15 Certified Armorer
- Duration
- Unknown
Complete disassembly, cleaning, inspection, reassembly and certification of AR-15 platform firearms. Focus on custom builds and upgrades.
Course Beginner
Basic & Advanced Handgun
- Duration
- 2.5 hours
In-depth study of handguns with 2.5 hours of academic learning and optional range time.
Course Defensive
Dynamic Defensive Shooting (Pistol)
- Duration
- Unknown
Focuses on dynamic shooting techniques: moving while firing, reloading under stress, and using cover/concealment. Uses SIRT laser pistols for training.
Course
Countering the Mass Shooter Threat
- Duration
- Unknown
Combines academic and tactical training based on Geno’s real-life experience thwarting a planned mass shooting at a Michigan school. Focuses on threat response and situational awareness.
Course Defensive
Less Lethal Defensive Means
Examines non-firearm alternatives including pepper spray, Tasers, tactical flashlights, and pepper ball launchers. Emphasizes legal risks, storage, and situational awareness.
Listing Snapshot
- Primary category
- Shooting Ranges
- Also listed as
- Firearm Instructors, Gunsmiths
- Legal name
- Concentric Lines Defense, LLC
- ZIP
- 80808
Social Links
Profile Details
Range Access
- Access
- Public
- Max distance
- 300 yards
Lane Areas
Outdoor
1 lane 300 yards Weapons: Pistol, Rifle, Shotgun, Rimfire
Tactical Bays
1 tactical bay
Dynamic defensive shooting with movement around barriers and cover
Virtual Simulators
1 simulator station
SIRT laser pistol training for trigger control and shot placement without live fire
Outdoor Shooting Ranges
Training and Classes
- Established
- 2013
- Certifications
- USCCA Certified Firearms Chief Instructor, USCCA Certified Range Safety Officer
Concealed Carry Classes
Gunsmith Services
- Type
- Mobile
- Service area
- CO, MI
- Individual gunsmith
- Yes
- Platforms
- AR 15, GLOCK
- Formal training
- Certified Armorer For The AR 15 Platform, GLOCK Certified Armorer
- Manufacturer certifications
- GLOCK, AR 15
- Services
- Custom builds
- Reputation
- 12 years in business
Custom Gun Builders
Map
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Primary location: 4855 Bar 10 Road, Ellicott CO 80808
Map location from the published directory record.
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Listed In
Firearm Instructors
Gunsmiths
Sources and Updates
USA Arms builds directory profiles from published business information, public records, and owner-submitted corrections when available. Confirm hours, inventory, fees, services, and eligibility requirements directly with the business before visiting.
Sources checked include concentriclinesdefense.net.
Last reviewed: July 7, 2026.
Corrections
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