Skeletonized AK Bolt Carrier for Lower Recoil and Gas Use
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Solution Overview
Problem
The AK-47 rifle is known for its reliability and ease of use but suffers from inaccuracy, high gas use, heavy weight, and recoil, with muzzle rise affecting target accuracy. Weight reduction without compromising structural integrity and reliability is needed.
Innovation Solution
A skeletonized bolt carrier for AK rifles, featuring a tubular operating rod with cutouts and a base block with side indents, made from AISI 8620 forged steel, reducing weight to 7.8 oz. from the standard 11.5 oz., and using an adjustable gas piston to optimize gas usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the bolt carrier is made solid and heavy, then structural integrity and reliability are maintained, but weight increases leading to higher gas consumption and recoil
Solution Approach 1:
The bolt carrier is segmented into a base block and a separate operating rod, allowing independent optimization of each component. The base block maintains structural integrity while the operating rod can be skeletonized with cutouts to reduce weight without compromising overall reliability.
Solution Approach 2:
The operating rod incorporates a skeletonized design with multiple cutouts creating a porous-like structure that significantly reduces weight while maintaining sufficient strength for its specific function of transmitting gas pressure to move the bolt carrier.
2Use of energy by moving object
If the bolt carrier weight is reduced, then gas consumption and recoil decrease, but structural integrity may be compromised
Solution Approach 1:
Different parts of the bolt carrier have different structural qualities optimized for their specific functions. The base block maintains solid construction for strength and reliability, while the operating rod features localized cutouts to reduce weight. This local differentiation allows weight reduction without compromising the structural integrity of critical components.
3Weight of moving object
If the bolt carrier is skeletonized with cutouts, then weight is reduced, but manufacturing complexity increases
Solution Approach 1:
Dividing the bolt carrier into separate base block and operating rod components allows each to be manufactured using different processes optimized for their specific requirements. The base block can be forged or machined solid, while the operating rod with cutouts can be manufactured separately, potentially using processes better suited for complex geometries, then assembled together.
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.