The RL556v3™ features Polymer80’s proprietary polymer composite, a solid core design, flared magwell, and heavier 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


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