BCM TRAINING TIP - LAV'S 50% RULE

Published on September 20, 2019
Duration: 2:34

This guide details Larry Vickers' '50% Rule' for enhancing AR-15/M4 carbine reliability, as presented by Vickers Tactical. It emphasizes four key steps: proper magazine loading (removing two rounds from full capacity), ensuring adequate lubrication on the bolt and bolt carrier group, securely seating the magazine with a push-pull method, and correctly charging the weapon by fully retracting and releasing the charging handle. Following these techniques, derived from experienced instructors like Ken Hackathorn, can significantly reduce potential malfunctions.

Quick Summary

Larry Vickers' 50% Rule for AR-15 reliability involves four key steps: load magazines with two fewer rounds than capacity and use the 'thumbnail trick' for proper feeding, ensure the bolt and carrier are visibly lubricated, seat magazines with a firm 'push-pull' to confirm lock-up, and charge the weapon by fully retracting and releasing the charging handle.

Chapters

  1. 00:15Introduction to LAV's 50% Rule
  2. 00:33Step 1: Magazine Loading (Thumbnail Trick)
  3. 00:59Step 2: Lubrication Check
  4. 01:18Step 3: Magazine Seating (Push-Pull)
  5. 01:41Step 4: Charging the Weapon

Frequently Asked Questions

What is Larry Vickers' 50% Rule for carbine reliability?

Larry Vickers' 50% Rule is a set of four simple techniques designed to eliminate at least half of the potential malfunctions encountered with AR-15/M4 style carbines. It focuses on proper magazine loading, lubrication, magazine seating, and charging the weapon.

How should I load a magazine according to the 50% Rule?

Load the magazine to its full capacity, then remove two rounds. Utilize the 'thumbnail trick' to ensure the top round can be depressed enough to clear the magazine feed lips easily, preventing feeding issues.

What is the importance of lubrication in the 50% Rule?

Visually inspect the bolt and bolt carrier group for adequate lubricant through the ejection port. Applying oil prevents friction-related failures, which are a common cause of malfunctions in semi-automatic firearms like the AR-15.

How do I properly seat a magazine using the 50% Rule technique?

Anchor the buttstock firmly. Insert the magazine using a 'push-pull' method: push it firmly into the magazine well to seat it, then give it a sharp pull to confirm it is securely locked in place and will not drop free.

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