Adjustable Comb Riser Using Factory Fasteners for Sight Alignment
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Solution Overview
Problem
Existing firearm and non-firearm stocks require permanent modification or complete replacement to accommodate modern optical or electrical sights, and existing risers often necessitate additional fasteners for operation.
Innovation Solution
An adjustable comb riser that mounts between the factory stock and recoil pad using factory fasteners, allowing vertical adjustment without modifying the stock, featuring a riser body and rear plate with adjustment slots for alignment and height adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If permanent modification or complete replacement of the factory stock is used to accommodate modern optical or electrical sights, then the sight alignment capability is improved, but the stock integrity and complexity are worsened
Solution Approach 1:
The invention divides the stock system into two independent parts: the original factory stock and the detachable comb riser attachment. The riser body with rear plate can be separately attached to the stock using existing fasteners, allowing sight alignment adjustment without modifying the stock itself. This segmentation enables adaptability while preserving stock integrity and reducing overall system complexity.
Solution Approach 2:
The comb riser acts as an intermediary component between the factory stock and the optical/electrical sights. It provides the necessary height adjustment and alignment capability for modern sights without requiring direct modification of the stock structure. The riser body and rear plate serve as a mediating attachment that bridges the compatibility gap between traditional stocks and modern sighting systems.
2Adaptability or versatility
If additional fasteners are used for riser operation, then the adjustment functionality is improved, but the device complexity and number of parts are worsened
Solution Approach 1:
The rear plate is designed to utilize the existing factory fasteners for multiple functions: securing the recoil pad and simultaneously providing adjustment slots for mounting the comb riser at various heights. This multi-functionality eliminates the need for separate adjustment fasteners, reducing the total number of parts while maintaining full adjustment capability. The same fasteners that secure the recoil pad also enable riser height adjustment through the slots in the rear plate.
3Ease of operation
If the comb riser is wrapped around the stock but not axially fixed, then the ease of installation is improved, but the alignment precision and stability are worsened
Solution Approach 1:
The adjustment slots in the rear plate enable the comb riser to self-align with the stock along the axial direction. When the fasteners are inserted through the slots, the riser body naturally positions itself in alignment with the stock without requiring external alignment tools or complex fixation mechanisms. This self-alignment feature maintains ease of installation while ensuring precise axial alignment and stable positioning.
Data Source
AI summary
An adjustable comb riser has an elongated stock profile that protrudes above the factory firearm or non-firearm stock, a rear face that clamps between the factory stock backplate and factory recoil pad, using the recoil pad screw holes in the stock backplate without modification. The rear face includes slots that will allow the riser to adjust vertically up and down in order to give the shooter a proper cheek rest on the firearm or non-firearm.