The newly designed, and 3D Printed AR180B Lower Completion kit along with your standard AR15 lower parts kit will allow you to populate the Nodak NDS-18S lower receiver. These kits are also great as spares for you AR180B rifle.
Due to the original supply of parts drying up, and no longer being produced, I designed a new kit to complete your lower receiver. Unfortunately this means the loss of the bolt hold open as it would not survive long being 3d printed.
A much reduced price.
Building a Nodak NDS-18S lower for use with an original AR180 upper required modifications to retain the bolt hold open feature, this will no longer be necessary and your upper can remain unmolested.
Safety spring retainer, pivot, safety and the safety retaining spring.