The StormWerkz Ar-180B Stock Adapter Type 5
-M1913 Picatinny Interface

Installation Instructions on factory Armalite lowers

1. Remove buttplate and using a long 1/4″ hex wrench, remove factory stock.

2. Cut plug off close to rear of receiver, leave about a 1/16- 1/8 material.

3. Sand or file remainder of plug flush to receiver.

4. Bolt adapter to receiver (new bolt included).