Buckle in ;)

The M4E1 PRO Lower Receiver seamlessly integrates ambidextrous controls into the M4E1 Lower that allows for the shooter to easily operate the bolt catch, magazine release, and safety without modifying their dominant firing hand.

All proprietary componentry of this lower receiver comes preinstalled and is compatible with mil spec parts and components giving the builder the freedom to configure as they see fit.

Includes:

• M4E1 Stripped Lower Receiver - Anodized Black
• Bolt Catch Assembly
• Magazine Release Assembly

To be assembled into manually operated configurations (e.g., bolt, lever, slide, pump)

Compliance Notice (Washington Residents):
This item is a frame or receiver only and is not a complete or operable firearm. Washington law regulates the manufacture, importation, distribution, sale, and offer for sale of “assault weapons” as defined in RCW 9.41.010 and RCW 9.41.390.
A frame or receiver standing alone is a part of a firearm. Any future assembly must comply with all applicable federal, state, and local laws. Manually operated firearm configurations (e.g., bolt, lever, slide, pump) are excluded from the statutory definition of an “assault weapon.”