Custom AR15 Rifle

Published on February 18, 2012
Duration: 12:05

This video details a custom AR-15 build focused on precision long-distance shooting. The build features a 20-inch Yankee Hill Machine barrel with a 1:7 twist rate, a free-floating handguard, and a Bushnell 4-12x40 scope. The presenter, demonstrating high authority, highlights the importance of component quality, including a National Match trigger and quality ammunition like HPR 75-grain BTHP, which resulted in exceptional 'one-hole' accuracy during range tests.

Quick Summary

A custom AR-15 precision build utilizes a 20-inch barrel with a 1:7 twist rate for enhanced stability and accuracy with heavier bullets. Key components include a free-floating handguard, National Match trigger, and a quality optic like the Bushnell Trophy 4-12x40. Testing with HPR 75-grain match ammunition demonstrated 'one-hole' accuracy.

Chapters

  1. 00:22AR15 Customizability & Barrel Choice
  2. 01:38YHM 20" Diamond Fluted Barrel Specs
  3. 02:43Free-Float Handguard & Gas Block
  4. 03:41Upper & Lower Receiver Details
  5. 06:37Bushnell Trophy Optic Setup
  6. 08:51National Match Trigger & Ammo Choice
  7. 10:02Accuracy Results & Precision Factors

Frequently Asked Questions

What makes a 20-inch AR-15 barrel suitable for precision shooting?

A 20-inch barrel offers increased sight radius and velocity compared to shorter barrels, contributing to greater stability and accuracy at longer distances. Combined with a 1:7 twist rate, it effectively stabilizes heavier match-grade bullets.

What are the key components for achieving sub-MOA accuracy in an AR-15 build?

Achieving sub-MOA accuracy requires a high-quality barrel (like a 20" fluted match barrel), a free-floating handguard, a precise National Match trigger, quality ammunition, and a stable optic with fine adjustments.

What is the significance of a 'keyhole' forge mark on an AR-15 upper receiver?

A 'keyhole' forge mark indicates the upper receiver was manufactured by Cero Forge, a well-respected supplier known for producing high-quality forgings used by many premium AR-15 brands, including Colt and LMT.

Why is a 1:7 twist rate recommended for precision AR-15 builds?

A 1:7 twist rate is ideal for stabilizing longer, heavier bullets (such as 75-grain or 77-grain .223/5.56mm rounds) which are often used in precision shooting applications. This ensures better aerodynamic stability and accuracy downrange.

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