Polymer 80 RL556v3 80% AR-15 Lower with Jig System - Black

Manufactured by Polymer 80
SKU: P80-RL556v3-BLK
MPN: P80-RL556v3-BLK
Manufactured by Polymer 80
3 Reviews

Out of Stock



Note: 80% Lower Receivers, Frames, and Kits may only be returned in new, unmodified condition.

Polymer80 has brought an ultralight approach to the AR-15 80% lower! The Polymer 80 RL556v3 80% AR-15 Lower with Jig System, is an amazing polymer AR lower. Lightweight and maneuvrability have always been a focus with the AR-15 platform. Weighing less than a traditional lower, the Polymer 80 RL556v3 80% Lower promises to change the game – but is it strong enough? It's Made from weapons-grade polymer so it definitely is!

  • 80% Polymer AR15 Lower Receiver (Mil-spec)
  • Polymer Jig
  • Trigger Hole Drill Guide
  • Drill Bits and End Mill
The RL556v3 80% AR-15 Lower is constructed from the same reinforced material that all current-production, off-the-shelf polymer firearms are built from. Polymer80 took the time to test, re-develop, and test again, their polymer lowers until they achieved a unit capable of handling thousands of rounds without failure.

It features reinforcements based on real testing to guarantee reliability. Polymer80 beefed up the buffer tube ring, reinforced the receiver with a solid core, added ribbing across the entire top surface, and developed a no-thread pistol grip mount. Last, the mag well has been stiffened, all while retaining a featherweight profile.

Polymer 80 is known for designing 80% receivers and jigs, so you can build your own Glock style handgun or AR-15 right in your garage. They have grown in popularity so fast that they are now offering their own completion kits with all the internal parts you need to finish a build. Whether you want to build a handgun or rifle, P80 has you covered.
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Assembly80 Percent
BrandPolymer 80
Caliber MarkingMulti-Caliber
Receiver MaterialPolymer
Trigger Pin DiameterMIL-SPEC .154

Ratings & Reviews

3 reviews

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This is a great step if you're interested in a polymer lower. They updated their gen 2 design and made it stronger. I do recommend updating the rear take down pin because it does get a little loose when pulling the pin out. Otherwise when it is pinned to the upper it performs great!

Hurry up and get one


Sleepy Joe will have these banned shortly...

only way to go


The build goes great with a drill press but of course a mill is better. They lock up tight with the upper. I have never had one fail. Buy if and when you can..