Stock: Weight 500-1200g, Drop at Comb 30-50mm

Component Specifications

Definition

The stock is a critical structural component of a tactical semi-automatic rifle that houses the receiver and barrel assembly, provides a stable platform for the shooter's shoulder and cheek, and often incorporates ergonomic features for improved handling. It serves as the primary interface between the shooter and the firearm, transmitting recoil forces to the body while maintaining sight alignment and control during rapid firing sequences.

Working Principle

The stock functions as a mechanical interface that transfers firing forces from the firearm to the shooter's body while maintaining stability and alignment. It provides leverage for aiming control, absorbs recoil energy through material deformation and design geometry, and positions the shooter's eye relative to the sights or optics. Modern tactical stocks often incorporate adjustable features to accommodate different body sizes, shooting positions, and equipment configurations.

Materials

High-impact polymer (glass-filled nylon, reinforced ABS), aluminum alloy (6061-T6, 7075-T6), carbon fiber composite, or wood (traditional applications). Polymer stocks dominate tactical applications due to weight, durability, and cost advantages.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	500-1200g
Drop At Comb	30-50mm
Drop At Heel	50-70mm
Length Of Pull	330-380mm (adjustable)
Storage Capacity	Optional battery/accessory compartments
Adjustment Points	3-6 position telescoping, cheek riser height
Mounting Interface	Mil-Spec or Commercial buffer tube

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9001, MIL-STD-810G, SAAMI

Engineering Analysis

Risks & Mitigation

Improper installation causing receiver damage
Material fatigue under sustained fire
Loose adjustments affecting accuracy
Compatibility issues with buffer systems

FMEA Triads

Trigger: Over-tightening mounting hardware
Failure: Cracked receiver extension threads
Mitigation: Use torque wrench (35-40 in-lbs maximum), apply thread locker

Trigger: Repeated adjustment cycles
Failure: Worn detent mechanisms causing loose fit
Mitigation: Regular inspection, replacement of wear components, use of quality detent springs

Trigger: Incompatible buffer tube diameter
Failure: Stock wobble or binding during operation
Mitigation: Verify specifications before installation, use matching commercial or mil-spec components

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.005 inches for critical interfaces, ±1mm for length adjustments

Test Method

Drop testing per MIL-STD-810G, cyclic adjustment testing (5000+ cycles), recoil simulation testing

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Stock

Manufacturer profiles associated with Stock.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between Mil-Spec and Commercial buffer tubes?

Mil-Spec buffer tubes have a diameter of 1.148 inches with specific threading, while Commercial tubes measure 1.168 inches. Stocks are not interchangeable between these standards without matching components.

How does stock material affect rifle performance?

Polymer stocks offer light weight and corrosion resistance, aluminum provides maximum rigidity for precision shooting, while carbon fiber combines strength with minimal weight at higher cost.

What are the key adjustments on modern tactical stocks?

Length of pull (LOP) adjustment via telescoping mechanism, adjustable cheek risers for optic alignment, and sometimes cant or height adjustments for specialized shooting positions.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Stock