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Polymer80 80% Lower Receiver, Jig, and Lower Parts Kit - LR-308/AR-10

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Go lightweight with your next .308-sized AR build. Get your polymer 80% LR-308 lower receiver and a lower parts kit all in the same place with this bundle we've put together. It includes a Polymer80 LR-308 (DPMS gen 1 pattern) 80% lower receiver paired with a standard LR-308 lower parts kit.

The 80% LR-308 Lower

Polymer 80 has figured out how to give the AR platform's .308WIN-chambered (7.62x51mm) cousin a much needed weight reduction.  They came up with the ultra lightweight Warrhogg .308!  This piece of gear is just what you need to start your heavy-ass LR-308 on the diet it so deserves. 

Introducing the Warrhogg .308 Polymer 80% lower, the world’s lightest DPMS-platform .308 lower on the market. Lightweight and maneuverability have always plagued the AR's .308 platform until now. Weighing less than half a pound, the Warrhogg .308 promises to change the game – But how well does it hold up?  How much abuse can it take?  Glad you asked.

Made from weapons-grade polymer!

The Warrhogg .308 80% lower is made with the same standards as all those polymer firearms.  Polymer 80 took the same approach with this bad boy until they were able to produce a .308 that could run for thousands of rounds without failing.

The Warrhogg comes reinforced, ready for battle!

The Warrhogg .308 lower features plenty of 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. Lastly, the mag well has been stiffened, all while retaining a featherweight profile.

For instructions on the Warrhogg, click here.

Warrhogg .308 AR-10 Polymer 80% Lower features:

  •         Weighs less than half a pound!
  •         Includes 80% lower jig
  •         Includes all necessary tooling
  •         Includes pistol grip nut and screw
  •         Reinforced Polymer Construction
  •         Integrated trigger guard
  •         Gripped mag well for ergonomics
  •         Compatible with all 80% lower Jigs
  •         Compatible with DPM Gen 3 Lower Parts Kit

The Lower Parts Kit

We strive to provide the most accurate photographs of our product whenever possible. Due to availability limitations and supply chain constraints, slight variations of the trigger and hammer finsh (stainless or black) may occur. 

If you're looking for an LR-308 trigger that suffers no creep, take-up, or over-travel, you're in the right spot. If you're looking for the easiest-to-install LPK, you're still in the right spot. If you're looking for the most affordable parts kit possible, again, you're where you need to be. This LR-308 LPK comes in at the price of a standard LPK but with machining and performance that truly feels match-grade.

Perfectly Polished for Performance

Th quality control is outstanding and the finish shows it: Inside you’ll find a disconnector, hammer hook, and sear whose interacting surfaces were laser-cut and polished to break as clean as glass at exactly 4.5 pounds. With the trigger, you'll experience perfect reset after every pull, with no break-in required. Every roll pin presses easily, while the hammer and trigger pins glide in with little effort.

Complete LR-308 Lower Parts Kit with Pistol Grip

This LR-308 Lower Parts Kit includes all components required for assembling your LR-308 stripped lower receiver:

  • Bolt Catch
  • Bolt Catch Plunger
  • Bolt Catch Roll Pin
  • Bolt Catch Spring
  • Buffer Retainer
  • Buffer Retainer Spring
  • Disconnector
  • Disconnect Spring
  • Steel Hammer
  • Hammer Pin
  • Hammer Spring
  • Magazine Catch
  • Magazine Catch Button
  • Magazine Catch Spring
  • Pistol Grip (A2 style)
  • Pistol Grip Lock Washer
  • Pistol Grip Screw
  • Pivot Pin
  • Pivot Pin Detent
  • Pivot Pin Detent Spring
  • Selector
  • Selector Detent
  • Selector Detent Spring
  • Takedown Pin
  • Takedown Pin Detent
  • Takedown Pin
  • Detent Spring
  • SSteel Trigger
  • Trigger Guard
  • Trigger Guard Roll Pin
  • Trigger Pin
  • Trigger Spring

Easy-to-Follow Install Instructions

First time assembling, or need assistance with certain steps? Check out our in-depth instructional and picture guide. It shows the full LPK assembly with tips and tricks, including tools required and the buffer tube and castle nut install.

Want a video instead? We've got a very detailed instructional video that shows you how to install your LPK, too! 

WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to:

Shipping Restrictions

Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily. only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

.308 Winchester
Polymer Composite

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.