The Tactical BCG – Manganese Phosphate Coated

Tactical Bee is one of the finest manufacturers of bolt carrier groups. Every BCG goes through a series of validation checks against the TDP before it is packaged and shipped. 

BCG Specifications: 

• Carrier Material:  Case Hardened 8620 Steel
• Gas Key:  4130 Steel attached with Grade 8 hardware and properly staked into a milled “valley” to ensure proper positioning.
• Cam Pin:  Hardened 4340 cam pin
• Firing Pin:  Mil Spec firing pin made of 8740 steel, center-less ground and Hard Chrome coated
• Bolt Material: Case Hardened 9310 Steel.
• Extractor: 4340 Steel , Manganese Phosphate coated
• MPI:   Magnetic Particle Inspected
• HPT:  High Pressure Test 

Below is a breakdown of all the indivudual checks we perform with the tools used 

System Checks: 

Gas Ring Test 

Live Fire Test 

Headspace Check with 223 / 556 / Field Gauges 

Carrier Key Alignment with Alignment Gauge 

Gas Path Check

Magnetism Check 

Bolt Validation Checks: 

Bolt Tail Diameter Check with Ring Gauges 

Firing Pin Protrusion with Depth Gauge 

Bolt Shoulder Diameter with Micrometer 

Bolt Face Check with Pin Gauge 

Cam Pin Shaft Diameter checked with Micrometer and Ring Gauges 

Cam Pin Hole Diameter checked with Pin Gauges 

Visual Inspection for rough material 

Cam Pin Laser Engraved American Flag to ensure installation repeatability

Extractor Pivot Pin Hole Diameter with Pin Gauges 

Extractor Gauge with Go / No-Go Gauge 

Carrier Validation Checks: 

Carrier Length with Micrometer 

Gas Ring Check with Pin Gauges 

Carrier Tail Check with Pin Gauges 

Shoulder. Check with Pin Gauges 

Internal Material Check with Borescope 

Carrier Key Diameter Check with Pin Gauge

Carrier Key Reverse Torque with Torque Wrench 

Packaged and  shipped  in unique  but very stylish 3D Printed packaging.