The RL556v3™ features Polymer80’s proprietary polymer composite, a solid core design, flared magwell, and beefier mil-spec buffer tube housing. The pistol grip area features a unique threadless design specific to Polymer80 rifle lowers.
The kit includes:
- 80% Polymer AR15 Lower Receiver (Mil-spec)
- Polymer Jig
- Trigger Hole Drill Guide
- Drill Bits and End Mill
The 80% "receiver blank" is defined by the ATF and therefore has not yet reached a stage of manufacture that meets the definition of firearm frame or receiver found in the Gun Control Act of 1968 (GCA).