The MK12 "At Home" - LaRue Match Grade Upper

Published on August 7, 2024
Duration: 11:44

This video details a custom AR-15 build, dubbed the 'MK12 at Home,' featuring a LaRue Match Grade 16-inch upper receiver. The presenter discusses various component choices, including an A2 stock, Edgar Sherman Design grip, Wilson Combat Ambi safety, Griffin Armament Snatch charging handle, and a SilencerCo Saker 556K suppressor. Shooting impressions are provided for several ammunition types, with the Hot Munitions 77-grain hollow point boat tail showing particularly tight grouping. The presenter also touches on the historical context and purpose of the MK12 platform.

Quick Summary

The MK12 platform was developed to improve the accuracy and range capabilities of the M4 and M16 rifles. This 'MK12 at Home' build features a LaRue Match Grade 16-inch upper, SilencerCo Saker suppressor, and various aftermarket parts, with the 77-grain Hot Munitions HPBT ammunition showing particularly tight grouping.

Chapters

  1. 00:40Introducing the MK12 'At Home' Build
  2. 00:56Component Breakdown: Stock, Grip, Safety
  3. 01:32Charging Handle & BAD Lever
  4. 02:02Trigger & Bipod
  5. 02:27Light & Suppressor Setup
  6. 03:10LaRue Match Grade Upper Deep Dive
  7. 03:57Optic Choice & Future Plans
  8. 04:25Purpose of the MK12 Platform
  9. 04:59Ammunition Testing: Fiocchi Range Dynamics
  10. 06:03Ammunition Testing: Hot Munitions Frangible
  11. 06:36Ammunition Testing: Hot Munitions 55gr FMJ
  12. 07:04Ammunition Testing: Hot Munitions 77gr HPBT
  13. 07:44Shooting Group Analysis
  14. 09:42Potential Build Improvements
  15. 10:25A2 Stock Comfort Discussion
  16. 11:00Rifle Painting & Final Thoughts

Frequently Asked Questions

What is the primary purpose of the MK12 rifle platform?

The MK12 platform was designed to enhance the M4 and M16 rifles for longer-range engagements. It aimed to provide greater accuracy at distance and the capability to reach out and engage targets more effectively, often with higher magnification optics and more precise barrels.

What are the key components of the 'MK12 at Home' build shown in the video?

This build features a LaRue Match Grade 16-inch upper receiver, an A2 stock, an Edgar Sherman Design grip, a Wilson Combat Ambi safety, a Griffin Armament Snatch charging handle, a SilencerCo Saker 556K suppressor, and a Steiner T6Xi 1-6x optic (to be replaced).

How did the Hot Munitions 77-grain hollow point boat tail ammunition perform?

The Hot Munitions 77-grain hollow point boat tail ammunition demonstrated excellent accuracy, producing a very tight group. Four out of five rounds were nearly touching, with only one flyer, which the presenter attributed to shooter error rather than the ammunition itself.

What are some of the presenter's criticisms or suggested improvements for this build?

The presenter finds the LaRue upper to be heavy and expensive. They also suggest that the forward assist could be positioned further forward, and note the lack of recoil absorption in the A2 stock's recoil pad, preferring more modern stock designs for comfort.

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