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 TacFire SS-RK556 rifle build kit contains- 16" 5.56 Nato, M4 contour barrel/nitride; birdcage flash hider w/crush washer; 15" MLOK free float handguard; AR15 5.56/.223/.300AAC stripped billet upper receiver w/M4 feed ramps/.556 Mil-Spec charging handle aluminum w/steel latch; dust cover; AR15 forward assist; AR15 standard receiver end plate; Mil-Spec/commercial castle nut/steel; buffer tube aluminum; AR 15 3 oz buffer w/tube spring; AR15 USA made lower parts kit and a AR15 standard A2 style black pistol grip/A2 style
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