Radical Firearms RF-15 Complete Lower Receiver Multi-Cal

DESCRIPTION 

The Radical Firearms RF-15 Complete Lower Receiver is built from 7075-T6 MIL-SPEC forged aluminum, delivering the strength, dimensional consistency, and reliability expected from duty-grade AR-platform components. Radical Firearms machines its lowers in-house using CNC processes that maintain tight tolerances and consistent quality across every unit. The Type III Class 2 hardcoat anodized finish provides durable protection against corrosion, abrasion, and heavy range use.

This complete configuration includes a 6-position collapsible SB Tactical SBA3 brace for adjustable length of pull and improved stability, paired with a classic A2 grip that offers a familiar ergonomic profile for right-hand shooters. Semi-automatic fire control components are factory-installed, allowing the RF-15 to accept any compatible mil-spec upper receiver across a wide range of calibers without additional fitting. For builders, competitors, and shooters who want a dependable, American-made lower without unnecessary extras, the RF-15 delivers a clean, ready-to-run foundation.

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SPECIFICATIONS

Manufacturer: Radical Firearms

Model: RF-15 Complete Lower Receiver

Caliber: Multi-Caliber

Capacity: Not specified

Barrel Length: Not specified

Thread Pattern: Not specified

Grip: A2 Grip

Stock: SB Tactical SBA3 Brace

Trigger: Not specified

Sights: Not specified

Finish: Black Hardcoat Anodized, Type III Class 2

Magazine Included: Not specified

WILD ZEBRA NOTES

7075-T6 forged aluminum provides true MIL-SPEC strength and dimensional accuracy.

SBA3 brace offers adjustable length of pull for improved control and fitment.

Compatible with any mil-spec upper, making it ideal for multi-caliber builds.

In-house CNC manufacturing supports consistent quality and tight tolerances.

Excellent choice for builders seeking a dependable, American-made lower at a strong value.