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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)
Trigger Hole Drill Guide
Drill Bits and End Mill