Skeletonized AK Bolt Carrier for Lower Recoil and Muzzle Rise
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Solution Overview
Problem
The AK-47 rifle is known for its relative inaccuracy, high gas use, heavy weight, and recoil, which makes it difficult to maintain target accuracy during rapid firing. There is a need to reduce the weight of the bolt carrier while maintaining structural integrity and reliability.
Innovation Solution
A skeletonized bolt carrier is designed for AK rifles by removing unnecessary material from the bolt carrier, specifically through the use of tubular shells with cutouts in the operating rod and side indents in the base block, made from AISI 8620 forged steel, to achieve a significant weight reduction without compromising reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If material is removed from the bolt carrier to reduce weight, then weight and gas consumption are reduced, but structural integrity may be compromised
Solution Approach 1:
The bolt carrier employs a skeletonized design with strategic cutouts and hollow sections that create a porous-like structure. The operating rod is hollow with circular cross-sections, and the bolt carrier body features multiple cutouts that remove material while preserving structural integrity through carefully positioned remaining material that maintains strength and reliability
Solution Approach 2:
The bolt carrier is divided into distinct functional segments: a base block portion and an operating rod portion. The operating rod is further segmented into hollow circular cross-sections along its length. This segmentation allows material removal in non-critical areas while maintaining structural integrity in load-bearing regions
2Weight of moving object
If the bolt carrier weight is reduced, then recoil and muzzle rise are decreased, but manufacturing complexity increases
Solution Approach 1:
The design parameters of the bolt carrier have been changed from a solid structure to a skeletonized structure with specific geometric features. The operating rod uses hollow circular cross-sections with consistent dimensions, and the base block has standardized cutout patterns. These parameter changes enable the weight reduction while maintaining manufacturability through repeatable geometric features
Data Source
AI summary
A skeletonized bolt carrier for an AK rifle is provided. The bolt carrier features a skeletonized operating rod to reduce overall weight while maintaining structural integrity. The bolt carrier also features side indents cut out of both sides of the base block which further reduce weight. The reduced weight of the bolt carrier enables lower gas consumption when firing, resulting in less recoil and less associated muzzle rise, leading to improved accuracy especially when multiple rounds are fired consecutively.