A Comprehensive Guide to Buying Your First AR-15
The AR-15 is the most popular rifle in the United States, with an estimated 20 million in civilian hands. Known for its modularity, reliability, and wide range of configurations, the AR-15 is used for home defense, competitive shooting, hunting, and recreational target shooting. If you are buying your first AR-15, this comprehensive guide will walk you through everything you need to know.
What Is an AR-15?
The AR-15 (Armalite Rifle 15) is a lightweight, intermediate-caliber semi-automatic rifle derived from the military M16 platform. The civilian AR-15 fires one round per trigger pull and is chambered most commonly in 5.56 NATO/.223 Remington, though it is available in dozens of calibers. The rifle features a modular design that allows easy customization of barrels, handguards, stocks, triggers, and optics.
Legal Requirements for Buying an AR-15
To purchase an AR-15 in the United States:
You must be at least 18 years old to purchase from a private party or at least 18 to purchase a long gun from an FFL dealer (federal law).
You must pass a NICS background check when purchasing from a licensed dealer.
Certain states have additional restrictions or outright bans on AR-15-style rifles (California, Connecticut, Illinois, Maryland, Massachusetts, New York, New Jersey, Hawaii). Always check your state and local laws before purchasing.
Choosing Your First AR-15: Key Considerations
Caliber
5.56 NATO/.223 Remington - The standard AR-15 caliber. Affordable ammunition, excellent availability, and proven performance for home defense, varmint hunting, and target shooting.
.300 Blackout - Optimized for suppressed use and deer hunting at close range.
6.5 Grendel - Extended range and improved terminal performance for hunting.
9mm - Pistol-caliber carbine configurations for home defense and competition.
Barrel Length
16-inch - The most common civilian configuration. Legal in all states, provides good velocity and accuracy.
18-20-inch - Preferred for precision long-range shooting.
14.5-inch and shorter - Requires SBR (Short Barreled Rifle) NFA registration, tax stamp, and ATF approval.
Gas System
Mid-length gas system - The preferred standard for 16-inch barrels. Reduces felt recoil compared to carbine-length systems.
Carbine-length - Common on budget rifles. Works well but produces more recoil.
Budget AR-15s Under $700
Ruger AR-556 - Reliable, American-made, excellent value at around $650.
Smith & Wesson M&P Sport II - Popular entry-level AR-15 with great reliability at $700-$750.
PSA (Palmetto State Armory) AR-15 - Budget-friendly builds with solid quality starting around $500.
Hi-Point HP-15 - New in April 2025, ultra-budget American-made AR at an accessible price.
Mid-Range AR-15s ($700-$1,500)
BCM (Bravo Company Manufacturing) - Mil-spec parts, battle-proven reliability.
DD (Daniel Defense) - Premium quality entry-level Daniel Defense rifles.
LaRue Tactical OBR - Precision-grade AR at competitive pricing.
Premium AR-15s ($1,500+)
Daniel Defense DDM4 V7 - Top-tier quality for home defense and competition.
Noveske Gen 4 - High-end competition and professional use.
LaRue Tactical PredatAR - Match-grade precision AR for long-range shooting.
Essential Accessories for Your First AR-15
Red dot or low-power variable optic (LPVO)
Sling for carry
Quality magazines (PMAG 30-rounders are the standard)
Weapon light for home defense builds
Storage in a locked safe or cabinet
Where to Buy Your First AR-15
You can purchase an AR-15 at local gun stores, sporting goods retailers, or online. Online purchases require an FFL transfer. Find a licensed FFL dealer near you at fflsearch.net to complete your transfer quickly and legally.