AR-15 Basics for New Owners

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September 3, 2026 · Dan Ribacoff, NRA-Certified Instructor

Why the platform is worth understanding properly

The AR-15 is the most common rifle in the United States and, for a defensive rifle, one of the easiest to shoot well. Low recoil, four points of contact, a long sight radius and excellent ergonomics mean that a new shooter is usually making solid hits within an hour — something that is emphatically not true of a handgun.

It is also a platform that people frequently acquire without instruction, assemble opinions about from the internet, and never learn to run properly. This article covers the fundamentals worth knowing before your first live-fire session.

The manual of arms

1. Check clear. Magazine out, charging handle back, lock the bolt open with the bolt catch, and look and feel inside the chamber and magazine well.
2. Safety. The selector can only be placed on safe when the hammer is cocked. Learn to sweep it with your thumb without breaking your firing grip.
3. Load. Insert a magazine and pull it down to confirm it is seated. Release the bolt with the bolt catch paddle. Do not ride the charging handle forward.
4. Fire. Selector to fire only when the rifle is pointed at the target and you have decided to shoot.
5. Unload. Selector to safe, magazine out, charging handle back, lock the bolt, visually and physically inspect.
6. Reload. Magazine release with the trigger finger, insert fresh magazine, bolt catch to release. The bolt locks open automatically on an empty magazine, which makes this fast.

Zeroing

Zeroing means adjusting your sights or optic so the point of impact matches the point of aim at a chosen distance. Because a bullet travels an arc and the sights sit above the bore, the trajectory crosses the line of sight twice.

Zero	Practical effect	Best for
50/200 yard	Near-zero at 50, crosses again near 200; a few inches high in between	General purpose and defensive use — the common default
36/300 yard	Similar concept at longer facility; higher mid-range rise	Longer distance work
25 yard	Simple to establish on a short facility; significant rise further out	Convenience where distance is limited
100 yard	Precise at 100; drops beyond	Precision and target shooting

For most owners, a 50/200 zero is the sensible choice: point of aim and point of impact are close enough for practical purposes from muzzle out to a couple of hundred yards, with no holdover arithmetic required at realistic distances.

Note also the mechanical offset. The sights sit roughly two and a half inches above the bore, so at very close distances your rounds land noticeably below your point of aim. At seven yards this matters, and it surprises shooters who have not been told.

Optics and sights

• Iron sights. Reliable, no batteries, and a genuinely capable system. Worth learning even if you mount an optic, as backup.
• Red dot. Fast, simple, excellent for close and medium facility, and forgiving of head position. The default choice for a defensive carbine.
• Low power variable optic. Magnification when needed, 1x when not. Versatile and heavier and more expensive.
• Magnified scope. For precision work at distance; slower up close.

Whatever you mount, mount it properly with correct torque, and confirm zero after mounting. An optic that shifts is worse than no optic, because you will trust it.

Lubrication and maintenance

The most useful maintenance fact about this platform: it runs better wet than clean. The direct impingement system deposits carbon in the receiver, and a dirty but well-lubricated rifle will generally keep running far longer than a spotless dry one.

• Lubricate the bolt carrier group generously — the bolt body, cam pin, gas rings and the carrier rails.
• Do not obsess over removing every trace of carbon from the bolt tail. Function matters more than appearance.
• Keep the chamber and bore clean; that is where accuracy lives.
• In South Florida humidity, wipe external surfaces and check for corrosion regularly, particularly after any outdoor session.
• Replace the extractor spring and gas rings periodically; they are cheap wear items.
• Inspect the buffer and spring occasionally.

Ammunition

The .223 Remington and 5.56 NATO distinction matters: 5.56 is loaded to higher pressure, and while a rifle chambered for 5.56 can generally fire .223 safely, the reverse is not true. Check what your barrel is marked.

Barrel twist rate determines which bullet weights stabilise. A 1:7 twist handles heavier bullets well; 1:9 favours lighter ones. Most modern rifles are 1:7 or 1:8 and are versatile.

For defensive use, purpose-designed loads outperform inexpensive bulk practice ammunition considerably. Test whatever you intend to rely on for reliability in your specific rifle, and confirm zero with it, since point of impact varies between loads.

Getting started properly

A first rifle session with an instructor typically covers safe handling and the manual of arms, sight or optic setup, zeroing, and initial marksmanship at 25 and 50 yards. From there, positional shooting, reloads, malfunction clearing and pistol transitions follow naturally.

Rifle and carbine training is conducted at outdoor facilities in Palm Beach and Broward County with the distance to do this properly. Call 516-315-2809 to arrange a session.

Buying decisions worth slowing down

Firearms and accessories are a market with enormous marketing spend and very little independent guidance, which makes it easy to accumulate equipment that does nothing for your shooting. A few principles that hold up over time.

Spend on fit and function before you spend on appearance. A gun that fits your hand, a belt stiff enough to carry it, a holster that covers the trigger guard completely, and quality hearing protection will do more for your shooting than any optic, trigger job or muzzle device.

Test everything personally. Recoil spring weights, trigger reach, grip texture and sight visibility vary enormously between models and cannot be evaluated from a specification sheet or a video review. An afternoon at a rental counter is the cheapest research available.

Be sceptical of anything that promises to substitute for training. Optics, lasers, compensators and premium ammunition all have legitimate uses, and none of them fix a grip, a flinch or a trigger press. The order of operations is fundamentals first, equipment second, and reversing it is how people end up with expensive guns they cannot shoot.

Train with a certified instructor in South Florida

Reading about shooting is useful. Being watched while you shoot is transformative — because the faults that limit you are, almost by definition, the ones you cannot see yourself. Delray Firearms Training provides private, NRA-certified instruction with Dan Ribacoff throughout Palm Beach County and Broward County, including Delray Beach, Boca Raton, Boynton Beach, West Palm Beach, Fort Lauderdale, Coral Springs and Weston.

Lessons are one-on-one by default, arranged by appointment seven days a week, and shaped around your experience level rather than a fixed script. Whether you have never fired a shot or you have carried for twenty years and want a specific problem solved, the starting point is a short conversation.

Call 516-315-2809 Request a Time

About the instructor

Dan Ribacoff is an NRA-certified firearms instructor, licensed private investigator and career security professional who has spent decades in investigations, executive protection and private security. He teaches handgun, rifle, carbine, shotgun, concealed carry, home defense and maintenance courses across South Florida. Read more about Dan →

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• Patterning Your Shotgun: The Exercise Every Owner Should Do
• Red Dots vs. Iron Sights on a Handgun
• Ammunition Explained: What the Numbers on the Box Mean