---
title: "Receiver"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:RECEIVER"
  data_integrity_hash: "55160239ec90a217b7a0880b4735183f"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:RECEIVER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/receiver.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/receiver"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-345 MPa (0-50,000 psi) cyclic pressure"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 414
    unit: "MPa"
    consequence: "High-cycle fatigue from repeated firing pressure pulses causing crack propagation at stress concentrators (e.g., pin holes, rail interfaces) following Paris' Law: da/dN = C(ΔK)^m where C=6.9e-12, m=3.0 for 4140 steel"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Stress corrosion cracking from chloride ion exposure (≥25 ppm) at tensile stress &gt;207 MPa"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Apply MIL-DTL-13924 Type II hardcoat anodizing with 0.025-0.038 mm thickness and seal with nickel acetate"
  - node_2:
      trigger: "Thermal softening from sustained fire exceeding 315°C (600°F) for &gt;120 seconds"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate 7075-T6 aluminum alloy inserts with thermal barrier coating (ZrO2-Y2O3, 0.1 mm thickness) at high-heat zones"
bom_nodes:
  bolt-carrier-group-channel:
    type: "component"
    urn: "URN:CNFX:ME:BOLT_CARRIER_GROUP_CHANNEL"
    interface_type: "physical-logic-coupled"
  trigger-pocket:
    type: "component"
    urn: "URN:CNFX:ME:TRIGGER_POCKET"
    interface_type: "physical-logic-coupled"
  magazine-well:
    type: "component"
    urn: "URN:CNFX:ME:MAGAZINE_WELL"
    interface_type: "physical-logic-coupled"
  barrel-extension-interface:
    type: "component"
    urn: "URN:CNFX:ME:BARREL_EXTENSION_INTERFACE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/receiver.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "fd79c9b3463089145bcbb3ecbd5f980f129a2f22e0a485bcc98b316552e5db0a"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Receiver

## 1. Technical Definition
The central structural component of a tactical semi-automatic rifle that houses the firing mechanism and provides mounting points for other components.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-345 MPa (0-50,000 psi) cyclic pressure**. Failure boundary: **Yield strength exceeded at 414 MPa (60,000 psi) or fatigue crack initiation at 10^6 cycles at 207 MPa (30,000 psi)**, Mechanism: **High-cycle fatigue from repeated firing pressure pulses causing crack propagation at stress concentrators (e.g., pin holes, rail interfaces) following Paris' Law: da/dN = C(ΔK)^m where C=6.9e-12, m=3.0 for 4140 steel**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Stress corrosion cracking from chloride ion exposure (≥25 ppm) at tensile stress &gt;207 MPa | 8 | Brittle fracture initiating at ejection port during firing cycle | Apply MIL-DTL-13924 Type II hardcoat anodizing with 0.025-0.038 mm thickness and seal with nickel acetate |
| Thermal softening from sustained fire exceeding 315°C (600°F) for &gt;120 seconds | 8 | Permanent deformation of rail mounting surfaces exceeding 0.05 mm tolerance | Integrate 7075-T6 aluminum alloy inserts with thermal barrier coating (ZrO2-Y2O3, 0.1 mm thickness) at high-heat zones |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **CNC Machining Center**, **Coordinate Measuring Machine**, **Heat Treatment Furnace**  
**Downstream Applications**: Tactical Semi-Automatic Rifle, Custom Firearm Platform, Military/Police Firearm System  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What makes 7075-T6 aluminum ideal for rifle receivers?
**A**: 7075-T6 aluminum offers exceptional strength-to-weight ratio and fatigue resistance, making it perfect for withstanding high-pressure firearm operations while keeping the receiver lightweight and durable.

### Q: How does the receiver interface with the barrel extension?
**A**: The receiver features a precision-machined barrel extension interface that ensures secure alignment and lockup with the barrel, maintaining accuracy and reliable headspacing for consistent performance.

### Q: Can this receiver accommodate aftermarket components?
**A**: Yes, the receiver is designed with standardized mounting points and dimensions that are compatible with most aftermarket AR-platform components, including different handguards, stocks, and trigger groups.

## 6. Manufacturing Compliance

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Receiver](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/receiver)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: RECEIVER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: a2ae6cc9
