No RF-85 treatment on this lower. Not at this price. This lower is hard anodized after being machines from a 7075T6 aluminum forging.

Liewellyn, no, this UPC code Lower is not RF-85 Treated (CNC Machined 7075 T6 Forged Aluminum
Black Type III Hard Coat Anodized) . The RF-85 Treated lower would add approximately $150 to this lower/

I dont think it is anderson says it a type III black hard anodize lower But I suggest that you call and ask them to be sure The AM-15 Stripped Lower Receiver is American made with superior quality for less! Our lower Receivers are CNC machined from a high-strength, 7075 T6 aluminum forging for reliable performance and outstanding durability. Machined to Military Specifications & Standards with a closed trigger and marked “Multi-Cal” to be used with multiple calibers on the AR-15 platform. This Lower Receiver comes in type III black hard anodize. Don’t over pay for the same lower receiver with a different logo and use your money saved elsewhere on your build! Pair this with one of our Upper Receivers for a solid fit for your AM-15 build! andersonmanufacturing.com/product/anderson-complete-lower-closed/ contact Anderson Manufacturing
1743 Anderson Blvd.
Hebron, Kentucky 41048
(859) 689-4085 option 1
Monday-Friday 8AM-4:30PM EDT
FAX: (859) 813-5363