Free-Floating Handguard System for AK Rifles
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Solution Overview
Problem
Existing handguard systems for AK-type rifles are non-free floating, which can decrease firearm accuracy and do not support rail-mounted accessories effectively.
Innovation Solution
A handguard system that includes a rear sight block and a handguard secured to the rear sight block without contacting the barrel, allowing for modular rail mounting and a gas tube yoke to maintain barrel freedom, while incorporating a heat shield and protective outer cover for ergonomic grip and thermal protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the handguard is supported by the barrel (prior art configuration), then the handguard structure is simple and easy to manufacture, but the barrel cannot float freely which decreases firearm accuracy
Solution Approach 1:
The handguard is divided into two separate pieces: a lower handguard section that clamps to the rear sight block and an upper handguard section that is removably secured to the lower section. This segmentation allows the handguard to be free-floating while maintaining structural integrity and enabling modular accessory attachment.
Solution Approach 2:
The rear sight block serves as an intermediary component between the barrel and the handguard. The handguard is secured to the rear sight block rather than directly to the barrel, allowing the barrel to float freely while the handguard remains stable and accurately positioned.
2Adaptability or versatility
If the handguard is configured to support rail-mounted accessories, then the versatility and adaptability of the firearm is improved, but the device complexity increases
Solution Approach 1:
The handguard system incorporates MIL-STD-1913 mounting rails on the upper handguard section, allowing universal attachment of various firearm accessories such as optics, lasers, night vision devices, foregrips, and bipods. The modular design enables different accessory configurations while maintaining a relatively simple overall structure.
3Adaptability or versatility
If the handguard is made as a single unitary piece, then the manufacturing process is simpler, but the adaptability for different accessory configurations is reduced
Solution Approach 1:
The handguard is segmented into two pieces that can be separately manufactured and then assembled. This allows each section to be optimized for its specific function while maintaining ease of manufacture through modular production techniques.
Solution Approach 2:
The upper handguard section is designed to be removably secured to the lower section, providing dynamic reconfigurability. Users can attach or remove accessories and even disassemble the handguard for maintenance or storage, while the manufacturing process remains relatively simple through modular construction.
4Manufacturing precision
If the handguard is free-floating (not contacting the barrel), then the firearm accuracy is improved, but the ease of manufacture and adaptation to AK-type rifles is reduced
Solution Approach 1:
The rear sight block acts as an intermediary that interfaces with both the barrel and the free-floating handguard. By securing the handguard to the rear sight block rather than the barrel directly, the system achieves free-floating status while maintaining compatibility with AK-type rifle platforms through the use of standard rear sight block mounting interfaces.
Data Source
AI summary
Implementations of a handguard system for firearms is provided. The handguard system is configured for use with a rifle (e.g., an AK-type rifle) and to support rail mounted firearm accessories. In some implementations, the handguard system comprises a rear sight block configured to fit about the barrel of a rifle and a handguard that can be removably secured to the rear sight block without making contact with the barrel (i.e. the handguard system is free-floating). In other implementations, the handguard system comprises a rear sight block and a handguard that can be removably secured together and thereby form a clamp that secures the handguard system to the barrel of a rifle. The handguard may be configured so that modular sections of MIL-STD-1913 mounting rail can be attached to various locations on the handguard as needed to provide a mounting structure for MIL-STD-1913 rail mounted firearm accessories.