Lower Receiver Assembly (AR-9, AR-15, and AR-10/LR108)
In this section, we will walk you through the lower receiver assembly process. We will cover this in a specific order to minimize having to undo/redo things.
Step L1: Attach Vice Block and Secure in Vice
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Objective: In Step L1 of lower receiver assembly, we will install the lower receiver into a vice block and vice.
Tools Required
Components Required
| Quantity | Component |
|---|---|
| 1 | Lower Receiver |
| 11 | Receiver Extension1 |
1: If using our recommended lower receiver vice block.
Instructions:
Step L1.1: Attach Vice Block to Lower Receiver
NOTE: If you are using our recommended lower receiver vice block, you will need to temporarily install the receiver extension. Thread a few threads of the receiver extension into the lower receiver.
Install the lower receiver onto the lower receiver vice block per the vice block manufacturer’s instructions.
Step L1.2: Install Vice Block into Vice
Secure the vice block in the bench vice.