Building an Accurate AR15 Part 1: The Upper Receiver

In this video, Caleb covers the first installment of the "How to Build an Accurate AR Series." The guide starts with a candid admission that some recommendations may differ from what viewers might have learned elsewhere, but promises to explain the rationale behind each suggestion. The video meticulously details the selection and assembly of components for building an accurate AR-15, including:

-The choice of a SilencerCo Billet upper receiver for its precise fit with the barrel and quality machining.
-The selection of a Brownells Mark 18 barrel, emphasizing the need for a premium barrel when accuracy is a priority.
-The utilization of a Geissele Mark 18 handguard for its rigidity and versatility, featuring an ARCA rail for easy bipod and tripod attachment.
-The importance of a quality adjustable gas block, with the Rifle Speed Adjustable Gas Block highlighted for its ease of adjustment and maintenance.
-Tips on selecting a quality upper receiver and what features to look for, such as proper machining and alignment.
-An explanation of why bedding the barrel may not be necessary for modern AR builds, providing insight into the process and its impact on accuracy.

The video concludes with a step-by-step guide on lapping the upper receiver to ensure a true and accurate fit with the barrel, including a detailed tutorial on using Brownells lapping tools and techniques for achieving a perfect finish.