ar15 lower for Sale

Looking to buy ar15 lower? Discover new and used listings from verified sellers across the U.S. Only on GunsAmerica.

Quick Look

The AR-15 lower receiver is a foundational firearm component originating from the ArmaLite rifle design of the 1950s. It serves as the core housing for trigger groups and magazines, embodying adaptability and modularity. Popular in civilian sports shooting and customization, AR-15 lowers remain a key part of many builds and upgrades.

Why It's a Top Choice

Highly customizable for various calibers and configurations
Compatible with a vast aftermarket accessory ecosystem
Allows precise control over fire control group components
Lightweight and durable materials commonly used
Ideal for both novice builders and experienced gunsmiths

Key Variants

Stripped AR-15 Lower — Primarily for builders assembling rifles from the ground up.

Complete AR-15 Lower — Ready-to-install unit including fire control components for immediate assembly.

Polymer AR-15 Lower — Lightweight option offering corrosion resistance and budget-conscious builds.

Billet AR-15 Lower — Precision-machined metal lowers for enhanced strength and aesthetics.

Competitor Comparison

Feature	AR-15 Lower	Ak-47 Lower	Sig Mcx Lower
MSRP	Varies, typically $50–$250	$80–$200	$150–$350
Capacity/Size	Standard AR-15 mag well	Larger AK mag well	MCX-specific mag well
Weight	Light to mid-weight	Heavier build	Lightweight
Optics-Ready	N/A (lower only)	N/A (lower only)	N/A (lower only)
Trigger Type	Varies by build	Varies by build	Typically striker-fired
Notable Pro	Extensive aftermarket parts	Durable, reliable platform	Modular with quick-change barrels
Notable Con	Requires assembly or parts separate	Larger recoil impulse	More expensive component

Best Use Cases

Custom AR-15 builds and home assembly
Competition shooting with tailored trigger setups
Hunting platforms with caliber versatility
Range training and target practice
Collection upgrades and personalization

FAQs

Can I use any AR-15 lower for all calibers?

Most AR-15 lowers support standard calibers; however, specific calibers may need dedicated lowers or modification for fit and function.

What is included with a complete AR-15 lower?

A complete lower includes the receiver plus trigger group, safety selector, and pistol grip, ready for upper assembly.

How does a billet lower differ from a standard one?

Billet lowers are machined from solid metal blocks offering enhanced strength and refined aesthetics over forged or cast lowers.

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