Flat Top AR Lower Receiver Buffer Tube Integration
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Solution Overview
Problem
The AR lower receiver's buffer tube receiving structure imposes design limitations, restricts material options, limits bolt carrier group travel, and increases production costs due to material and machining requirements.
Innovation Solution
The Flat Top AR Type Lower Receiver design removes the buffer tube receiving structure, allowing a continuous flat top surface for attaching the buffer tube or stock assembly to the upper receiver, enabling new upper receiver designs and reducing material needs, making it compatible with both buffer tube and Picatinny rail attachments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the buffer tube receiving structure is removed to reduce material and simplify design, then manufacturing cost and device complexity are reduced, but compatibility with standard AR upper receivers is compromised
Solution Approach 1:
The buffer tube receiving structure is separated from the lower receiver body and implemented as a detachable attachment component. This segmentation allows the lower receiver to have a simplified flat top design while maintaining compatibility with standard AR upper receivers through optional attachment of the buffer tube receiving structure.
Solution Approach 2:
The buffer tube receiving structure is designed to be dynamically configurable - it can be attached when compatibility with standard AR upper receivers is needed and removed when using custom upper receivers. This dynamic approach allows the system to adapt to different operational requirements.
2Weight of moving object
If the buffer tube receiving structure is removed to reduce material, then weight and material cost are reduced, but structural strength to handle recoil forces is compromised
Solution Approach 1:
The lower receiver is designed to accommodate composite material construction, particularly for the pistol grip and handguard areas. This allows weight reduction through materials like polymer composites while maintaining structural strength to handle recoil forces through strategic placement of high-strength materials in critical areas.
Solution Approach 2:
The lower receiver employs local quality optimization by using thinner or lighter materials in non-critical areas while maintaining full strength in critical load-bearing regions. The attachment points for the buffer tube receiving structure are specifically reinforced to handle recoil forces locally without requiring the entire receiver to be heavy.
3Adaptability or versatility
If the flat top surface is extended to the rear to enable direct attachment of buffer tube or stock assembly, then modularity and design flexibility are improved, but the complexity of ensuring compatibility with different attachment methods increases
Solution Approach 1:
The extended flat top surface is designed with universal attachment capabilities that can accommodate multiple attachment methods including direct mounting, Picatinny rail attachments, and buffer tube receiving structure attachments. This multi-functional design allows a single platform to support various configuration options without requiring separate specialized surfaces for each attachment type.
Data Source
AI summary
A flat top ar15 type lower receiver for a firearm.