Adjustable BB Gun Stock for Variable Length of Pull

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional BB guns with fixed stocks are unsuitable for users of different body types or sizes, as they lack the ability to adjust the length of pull, making them suitable only for a specific body type or size.

Innovation Solution

An adjustable stock system for BB guns, comprising an adapter and a butt stock that can translate and be secured in multiple positions, allowing for adjustable length of pull, accommodating users of varying sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed stock is used in a BB gun, then the structure is simple and manufacturing is easy, but the BB gun cannot accommodate users of different body types or sizes

Engineering Contradiction:
Improveadaptability to different body typesVSAvoidstock structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The stock is divided into multiple segments or sections that can be adjusted relative to each other. The stock includes a forend, a grip, and a buttstock portion that can be repositioned along the barrel axis, allowing the overall length and configuration to be segmented and reconfigured for different user sizes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The stock transitions from a static, fixed configuration to a dynamic, adjustable configuration. The stock includes movable components such as a telescoping buttstock or adjustable forend that can be repositioned along the barrel, enabling the stock to adapt its length and shape according to the user's body type while maintaining structural integrity through locking mechanisms.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the stock length is fixed, then manufacturing precision requirements are lower, but the BB gun is suitable only for one body type or size

Engineering Contradiction:
Improvesuitability for different usersVSAvoidadjustable mechanism precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The stock design provides multi-functionality by enabling a single stock structure to serve multiple users of different sizes. The adjustable mechanism allows the stock to assume multiple configurations, making it universally applicable to children, adults, and users with different body types, thereby eliminating the need for multiple fixed-stock models.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The stock allows for parameter changes in its physical dimensions, specifically the length along the barrel axis. By enabling the stock to change its effective length through adjustment mechanisms such as telescoping sections or movable components, the design accommodates varying user requirements without requiring multiple precision-manufactured fixed-stock variants.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If an adjustable stock is implemented, then the BB gun can be used by persons having different body types, but the device complexity increases

Engineering Contradiction:
Improveease of adjustmentVSAvoidoverall device complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The adjustment mechanism is designed to be user-operable without requiring external tools or complex procedures. The stock includes features such as sliding components, telescoping sections, or movable parts that can be easily repositioned and locked by the user themselves, enabling self-service adjustment for different body types while minimizing the need for additional complex mechanisms.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12449230B2Adjustable stock for a BB gun
Publication Date: 2025.10.21 POWELL DAVID N
  • US12449230B2 patent drawing
  • US12449230B2 patent drawing
  • US12449230B2 patent drawing

AI summary

A BB gun may include a firing mechanism assembly and an adjustable stock. The adjustable stock may include an adapter coupled to the firing mechanism assembly and a butt stock movably coupled to the adapter for providing the BB gun with an adjustable length of pull. The butt stock may be configured to translate relative to the adapter and to be selectively secured relative to the adapter in a plurality of positions defining a plurality of different lengths of pull.