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Guides

The ERG Library

Guides

Everything we teach at the counter, in one place. Colorado hunting and gun law, competition reference data, gear breakdowns, platform histories, and the plain-English answers our customers ask most.

Colorado LawSteel ChallengeColorado HuntingOptics and SightsSuppressorsRifle PlatformsSpotlightsShooting a Steel Challenge stageBull elk in ColoradoThe gunsmith bench at Elk River Guns

01Colorado Law in 2026

Two things changed for Colorado gun owners this year, and both change what you can buy and how. These are plain-English explainers with the statutes and the state’s own guidance linked — not legal advice.

Shooter with a semi-automatic rifle at a range barricade

SB25-003 • In Effect Aug 1, 2026

Colorado’s New Semi-Auto Law, Explained

What a “specified semiautomatic firearm” actually is, the eligibility card and course, and what it means if you’re buying or building. Start here before you shop.

Read the guideSuppressors standing on end

NFA • August 2026 Ruling

The NFA Suppressor Ruling and Colorado

A federal court struck down NFA registration for suppressors. What that did and did not change, and where Colorado buyers actually stand today.

Read the guide

02Steel Challenge

We shoot this sport, so we maintain the reference for it — the full peak-time table, the 2026 division list, and a page for every one of the eight official stages with the real dimensions. Everything here is dated and checked against the current rulebook.

Steel Challenge Shooting Association

Straight from the source

The sport is run by the Steel Challenge Shooting Association, an organization of USPSA. We explain their material and check every page here against it — for anything official, go to them: the rulebook, classification records, the match calendar, find a club, and membership.

Shooter engaging steel at a Steel Challenge match

Start Here

Steel Challenge: The Complete Guide to the Sport

Five plates, eight standardized stages, and a clock that doesn’t care who you are. What the sport is, how classification works, what a first match actually costs you, and what you need in the bag. Bring a .22 and you’re in.

Read the guideRange officer running a shot timer

Reference • Verified Sep 2026

Peak Times: Every Division, Every Stage

All 16 scoring divisions across all 8 stages, the classification math worked through, and the per-string par time each number comes out to.

See the dataCompetitor on the line at a steel match

Reference • 2026-03 Rulebook

Divisions in 2026: All Sixteen, Correctly

Eleven equipment divisions, sixteen scoring divisions, the Open-to-Optics rename, and every change the March 1, 2026 rulebook made.

See the listSteel plate being hit on a bay

Rules

Scoring and Penalties: What People Get Wrong

The 30-second ceiling, what a miss really costs, why the timer never backs up, and the appeal window shooters forfeit by accident.

Read the guidePistol held at the start position

Rules

The Start Position, With the Numbers

Two start positions, not one — and the aiming flag for rimfire and carbine has published dimensions worth knowing. Plus creeping vs. false start.

Read the guideYampa Valley Practical Shooters Thursday match

Local • Steamboat Springs

The Yampa Valley Thursday Series

Steel Challenge at Routt County Rifle Club — what it is, what you need, and how to shoot your first one without embarrassing yourself.

See the details

And a page for each of the eight official stages — our own scale plan, every published dimension, current peak times, and how to shoot it:

SC-1015 to GoThe classic staggered lineSC-102ShowdownTwo boxes, 75-foot rectanglesSC-103Smoke & HopeThe fastest stage in the sportSC-104Outer LimitsThe only one with movementSC-105AcceleratorNear pair, far pair, one planSC-106PendulumPure transition diagnosticSC-107Speed OptionA stop plate at 105 feetSC-108RoundaboutFive identical plates

03Colorado Hunting

Season dates, license deadlines, unit strategy and gear picks — from a shop that hunts the same units you do.

Bull elk in Colorado

Big Game • Updated for 2026

Colorado Big Game: Seasons and Deadlines

Verified CPW season dates for archery, muzzleloader, and all four rifle seasons. Plus draw deadlines, what’s new this year, and gear picks.

Read the guideColorado black bear

Bear Hunting

Colorado Black Bear: Seasons, Licenses and Gear

The September opener, four rifle seasons, mandatory tooth submission, gear, and the respect a big-bodied bruin deserves.

Read the guideFall turkey

Fall Turkey

Fall Turkey Hunting in Colorado

The sleeper season — OTC tags, either-sex birds, and a season that closes Oct. 4 west of I-25. Know your dates.

Read the guideBore scope inspection before season

Pre-Season Prep

Cleaning and Maintenance

What to check before opening day — and what a working gun actually needs between seasons.

See the service

04Optics and Sights

The glass decides the shot. Buying guides, how-they-work explainers, and the counter answers to what beginners always ask.

Rifle with an optic mounted

Optics • Start Here

Firearm Optics: Scopes, Red Dots and Sights

The foundational guide — irons, red dots, magnified scopes, prisms and LPVOs, and how to match glass to the job.

Read the guideDual optic setup on a rifle

Dual Optics

Dual Optic Setups: Offset, Piggyback and Magnifier

Offset 45, piggy-back and prism-plus-magnifier — the three ways to cover every distance without swapping guns.

Read the guideBoresighting a hunting riflescope

Rifle Setup

Bore Sighting: What It Is and Why It Matters

Ten minutes at the bench that saves you a box of ammo at the range. Bore sighting vs zeroing, tools, and when to do it.

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05Suppressors

How they actually work, what “hearing safe” really means, and the current paperwork for buying one in Colorado.

Suppressors standing on end

Suppressors • Intro

How Suppressors Work, and What “Hearing Safe” Means

What a suppressor actually does (and doesn’t). The physics, the real decibel numbers, and why it isn’t a substitute for earpro.

Read the guideSuppressor mounted on a rifle

Suppressors • Buying

How to Buy a Suppressor in Colorado

The Form 4 eForm process, fingerprints and photos, trust vs individual, and 2026’s $0 tax stamp.

Read the guideRifle on the bench at the range

Suppressors • Why

How Silencers Make Shooting Safer and Easier

Hearing protection, less recoil, better follow-through — the practical case for a can beyond just being quiet.

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06Rifle Platforms

America’s most popular rifle formats — where they came from, how they work, and what to do with them. Read the whole series.

Modern AR-15

AR Series • Part 1 of 3

Introduction to AR-Type Rifles

What “AR” actually stands for, where it came from, and why the 1956 design is still the best-selling centerfire rifle in America.

Read Part 1AR-15 with an optic on the line

AR Series • Part 2 of 3

The AR-15: A Modular Marvel

Under the hood on components, calibers, barrel length and gas systems — plus what SB25-003 says about receivers and parts kits.

Read Part 2AR-15 in competition

AR Series • Part 3 of 3

AR-15 Versatility: Competition, Hunting and Home Defense

Same platform, wildly different jobs. Includes Colorado’s six-round limit for big game.

Read Part 3AK-12 rifle

AK Series • Part 1 of 2

The AK Platform

Eighty years after Kalashnikov drew it up, still the most-produced rifle in human history. The design that just works.

Read Part 1AK variants

AK Series • Part 2 of 2

AK Variants and Custom Mods: How to Tell Them Apart

How to spot AK-47 vs AKM vs Zastava M70 vs AK-12. Furniture, triggers, safeties, optics — the modernization playbook.

Read Part 2The gunsmith bench at Elk River Guns

At the Bench

Gunsmithing and Custom Builds

Triggers, optics mounting, stock fitting and suppressor-ready setups — what our gunsmiths actually do with these platforms.

See the bench

07Manufacturer Spotlights

Deep dives on the brands we love on the rack — how they make what they make, and what to look for.

Benelli hunting shotguns

Featured • Benelli

Benelli Shotguns and Rifles: The Inertia System Explained

Six decades of Italian inertia-driven engineering. Super Black Eagle 3, M2 Field, Lupo bolt gun, and R1 semi-auto rifle — what each one is built to do, and who each one is for.

Read the spotlightGet 5% off your first order

New guides, straight from the counter

Colorado season dates and draw deadlines, what the law actually says when it changes, rebates worth claiming, and the Thursday match schedule when it drops. No spam, and you can leave any time.

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Come Talk Gear at the Shop

Read the guide, then come by the counter. We’ll help you match the right rifle, scope or can to your hunt, your budget, and your season.

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