CMMG MK17 Lower Receiver Assembly | Armor Black | Multi-Cal

The CMMG MK17 lower receiver assembly in Armor Black is a factory-backed lower intended for AR-style builds. It is presented as a multi-caliber compatible lower and features a colored/armor black finish. This assembly is suitable for custom build projects and range use where a reliable, finished lower is needed.

Applications include component-level rifle builds and competitive or precision shooting platforms where a finished lower receiver is required.

Product Specifications

• The product dimensions are 2.45 X 4.50 X 10.50.
• The overall height is 2.4500.
• The overall width is 4.5000.
• The overall length is 10.5000.
• The listing indicates it is an AR-15 accessory with a value of Yes.
• The caliber designation is MULTI-CAL.
• The metal finish is listed as COLORED.
• The stock material is listed as NONE.
• The stock finish is listed as NONE.
• Other features are listed as LOWER RECEIVER ASSEMBLY, MK17, ARMOR BLACK.
• The finish type is listed as COLORED.
• State restriction for Illinois is noted as NO SALE TO ILLINOIS PICA.
• The product category is listed as AR Lower Parts.
• The manufacturer is listed as CMMG.
• The UPC is 810097506749.

This lower receiver assembly provides a finished component for builders and competitors seeking a reliable, color-finished MK17-style lower. Its multi-cal designation and completed configuration simplify assembly choices for custom projects and range-oriented applications.