AR 15 Lower for Sale

Looking to buy AR 15 Lower? Discover new and used listings from verified sellers across the U.S. Only on GunsAmerica.

Quick Look

The AR-15 lower receiver forms the core of the widely popular modular rifle platform, developed in the 1950s. It serves as the main housing for the trigger group and magazine well, ensuring reliable firearm function. Today, AR-15 lowers are essential for custom builds and widespread civilian use.

Why It's a Top Choice

Compatible with many upper receivers and accessories
Build flexibility for rifles, pistols, and carbines
Durable construction from aluminum or polymer options
Standardized design for easy parts replacement
Strong aftermarket support and customization

Key Variants

Stripped AR-15 Lower

Ideal for custom assembly by experienced builders or gunsmiths.

AR-15 Lower with Trigger Group

Complete lower for quick build and immediate shooting capability.

Polymer AR-15 Lower

Lightweight alternative with corrosion resistance for varied environments.

Competitor Comparison Table

Feature	AR-15 Lower	AK-47 Lower	FN SCAR Lower
MSRP	$50–$200 (varies by type)	$80–$160	$150–$250
Capacity/Size	Standard AR magwell (varies by caliber)	Larger AK magwell	Modular SCAR magwell
Weight	Approximately 0.5–0.8 lb	Heavier metal construction	Moderate weight with polymer parts
Optics-Ready	Dependent on upper receiver	Integral to design	Upper receiver optics mounts
Trigger Type	Varies; standard AR triggers	Fixed/semi-auto triggers	Adjustable triggers available
Notable Pro	Highly modular and customizable	Proven reliability worldwide	Modern design with ambidextrous controls
Notable Con	Requires assembly and knowledge	Heavier and less modular	Higher cost and availability limits

Best Use Cases

Custom rifle and pistol builds
Self-defense platforms
Competition shooting
Range training and practice
Collecting modular firearms parts

FAQs

Can I use any AR-15 upper with this lower?

Yes, most AR-15 lowers accept standard AR uppers, but verify caliber compatibility and pin alignment before assembly.

What materials are AR-15 lowers made from?

Commonly aluminum (7075-T6) or forged polymer; aluminum offers strength and durability, polymer reduces weight.

How does a stripped lower differ from a complete lower?

A stripped lower lacks the trigger group and safety components, requiring assembly; complete lowers include these for immediate use.

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