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Griffin Armament

Griffin Armament Mk2 Ambidextrous Stripped Lower Receiver

Lightweight billet lower with 60-degree magwell and ambidextrous controls. Precision machined for superior fit and finish.

Quick Specs

Price
$325
Weight
9 oz
Brand
Griffin Armament
Category
lower-receiver

Features

  • 7075-T6 billet aluminum
  • Ambidextrous mag release and bolt catch
  • 60-degree aggressive magwell
  • Type III hardcoat anodized
  • Lightweight at 9 oz

Capability Boosts

Modularity+2
Mobility+1

Compatibility Tags

family: ar-pattern

Overview

Griffin Armament's Mk2 ambidextrous lower receiver delivers competition features in an ultra-lightweight package. Precision machined from 7075-T6 billet aluminum to exact tolerances, the Mk2 achieves a remarkable 9-ounce weight while maintaining superior strength and rigidity. Every receiver is machined in-house to Griffin's exacting standards, with premium de-burring and de-flashing that leave a flawlessly smooth surface.

The standout feature is the aggressive 60-degree magazine well, the steepest angle in the industry, ensuring smooth reloads even in high-stress situations. This pronounced flare guides magazines into the well with minimal precision required, significantly improving reload speed during competition or defensive use. The ambidextrous magazine release and bolt catch/release provide intuitive operation for both left and right-handed shooters.

Type III hardcoat anodizing delivers superior resistance to surface wear, scuffs, scratches, and discoloration from cleaning solvents and oils. The Mk2 is machined to mil-spec tolerances ensuring proper fitment with all standard lower components. Note that the stripped lower includes only the left-side ambidextrous controls; the standard right-side magazine release button is not included but can be added if desired for dual-side operation.

Key Features

  • Ultra-lightweight at 9 oz for reduced carry weight
  • Aggressive 60-degree magwell for rapid reloads
  • Ambidextrous magazine release and bolt catch/release
  • Precision in-house machining to exact tolerances
  • Type III hardcoat anodized for superior wear resistance
  • Premium de-burring and de-flashing throughout
  • Mil-spec compatibility with all standard components

Pros

  • +Lightest ambidextrous lower at 9 oz
  • +60-degree magwell provides fastest reload angle
  • +In-house precision machining ensures tight tolerances
  • +Full ambidextrous controls for left/right shooters
  • +Premium surface finish resists wear and chemicals
  • +Excellent value for billet ambi lower
  • +Flawless de-burring and finishing

Cons

  • Stripped version lacks standard right-side mag release
  • Aggressive magwell may not suit all preferences
  • Lighter weight may result in slightly less rigidity
  • Premium pricing over forged alternatives
  • Billet construction costs more than forged options

Detailed Specifications

compatibility
AR-15 / M4 platforms (mil-spec)
Material
7075-T6 billet aluminum
finish
Type III hardcoat anodized
manufacture
In-house precision CNC billet machined
controls
Ambidextrous mag release and bolt catch/release
magwell
60-degree aggressive flare
fireControlPocket
Mil-spec (.154" pins)
surfaceFinish
Premium de-burred and de-flashed
included
Left-side ambi controls (no right-side mag release)

Compatible Platforms

+23 more

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