The AM-15 M4 Lower Receiver is completely assembled using parts manufactured on location in Hebron, Kentucky. Our lower receiver is CNC machined using 7075 T6 aluminum and type III black hard anodized. Once anodization is complete, the lower makes its way to quality control to ensure that it meets Military Specifications and Anderson's quality standard to ensure that you, our customer, gets a high quality product.

This complete AM-15 M4 Lower Receiver is assembled, by hand, at Anderson Manufacturing by our assembly team. Once assembly is complete, it is function tested to ensure full functionality prior to shipping.

AM-15 M4 Lower Receiver is marked 'MULTI CAL' and is compatible with all calibers within the AR-15 platform.

Equipped with a six position buffer tube and adjustable buttstock to give the shooter options when it comes to proper eye relief, sight picture and a comfortable cheek weld. This is built on an Anderson open trigger guard Lower Receiver that is compatible with AR-15 pistol grips, buttstocks, fire control groups, trigger guards, etc... allowing for customization options.

Features Anderson's Single Stage, Stainless Steel Trigger and Hammer.