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AR-15Mid-Range

KE Arms

KE Arms WWSD 16"

Lightweight polymer lower with integral stock, Rekluse trigger, and JP Silent Capture Spring. Modern interpretation of Stoner's original design philosophy using advanced materials

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Key Highlights

  • Ultra-lightweight at ~5.5 lbs
  • KP-15 polymer lower with integral stock
  • Rekluse trigger technology included
  • PDQ ambidextrous bolt release

Specifications

Price
$1,499
Weight
5 lb 8 oz
Calibers
5.56x45mm, .223 Rem
Rail Type
mlok
Best For
competitionrange traininghome defenseoutdoor defense

Capability Profile

0-10 Scale Across 8 Axes

Compatibility Tags

family: ar-patterninterface: picatinny-tophandguard: mlokbarrel: long

Overview

The What Would Stoner Do (WWSD) 2020 rifle represents a fascinating thought experiment turned reality: what would AR-15 designer Eugene Stoner create if he had access to modern materials and manufacturing? Developed through collaboration between InRange TV, Forgotten Weapons, Russell Phagan of KE Arms, and Brownells, the WWSD challenges conventional AR-15 design by asking which features are truly necessary. The result is a rifle that weighs just 5 pounds unloaded - nearly 2 pounds lighter than standard AR-15s - while maintaining the reliability and accuracy expected from a fighting rifle.

The heart of the WWSD is the revolutionary KP-15 polymer lower receiver with integral fixed stock. Unlike add-on polymer parts, the KP-15 was designed from the ground up as a complete unit, resulting in a structure that's both lighter and stronger than trying to replicate traditional designs in plastic. The lower features modern improvements including an optimized magazine well for PMAGs and D-60 drums, improved pistol grip angle and texture, ambidextrous PDQ bolt release, and M-LOK slots plus QD sockets in the stock. The 16-inch pencil profile barrel uses a mid-length gas system, and notably, there's no forward assist - a feature Stoner himself removed from his later designs.

The WWSD philosophy extends to the component selection: a lightweight pencil barrel provides adequate accuracy without unnecessary weight, carbon fiber handguards save ounces while providing M-LOK mounting, the JP Silent Capture Spring eliminates buffer rattle, and the SLT-1 Sear Link Trigger provides a crisp pull. Testing shows the rifle is remarkably easy to handle thanks to the light weight and excellent balance. Despite the lightweight construction, recoil remains manageable and the rifle functions reliably. At $1,700 complete, the WWSD isn't the cheapest AR-15, but it represents a genuine rethinking of the platform rather than just another parts combination. This is for shooters who appreciate thoughtful design that questions conventional wisdom.

Key Features

  • Revolutionary KP-15 polymer lower with integral fixed stock
  • Ultra-lightweight 5 lbs unloaded weight
  • 16" pencil profile barrel with mid-length gas system
  • Carbon fiber M-LOK handguards for weight savings
  • Ambidextrous PDQ bolt release lever
  • JP Silent Capture Spring system for smooth operation
  • SLT-1 Sear Link Trigger with crisp pull
  • No forward assist - following Stoner's later design philosophy

Pros

  • +Exceptionally lightweight at 5 lbs - 2 lbs lighter than standard ARs
  • +Beautifully balanced despite light weight
  • +KP-15 lower designed from scratch, not adapted design
  • +Thoughtful modern improvements like optimized mag well
  • +Manageable recoil despite lightweight construction
  • +Represents genuine innovation rather than parts assembly

Cons

  • Limited compatibility with standard AR parts (special buffer, FCG)
  • Fixed stock - no length of pull adjustment
  • Takedown pins not captured, can be lost
  • Early production had overgassed barrel issues (corrected)
  • Polymer construction concerns for some traditional users
  • Non-standard design limits some upgrade paths

Detailed Specifications

caliber
5.56 NATO / .223 Rem
Barrel Length
16 inches
Overall Length
~36 inches
weight
5 lbs (2.25 kg) unloaded
Gas System
mid-length
Twist Rate
1:7 or 1:8 depending on barrel
barrel
Pencil profile, nitride coated (Ballistic Advantage)
handguard
Carbon fiber M-LOK free-float
trigger
SLT-1 Sear Link Trigger
stock
Integral fixed A2-style (KP-15 lower)
msrp
$1,700

Compatible Components

+54 more

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