458 SOCOM Nitride QPQ Bolt Carrier Group (BCG)

$139.00

This 458 SOCOM Nitride QPQ Bolt Carrier Group (BCG) is engineered and manufactured to military specification. Gas keys are staked using over 15 tons of pressure giving you peace of mind while cycling.

In stock

Description

This 458 SOCOM Nitride QPQ Bolt Carrier Group (BCG) is engineered and manufactured to military specification. Gas keys are staked using over 15 tons of pressure giving you peace of mind while cycling.

Note: It has been found this item is not compatible with the 6.5 Creedmoor.

458 SOCOM Nitride QPQ Bolt Carrier Group (BCG) Features:
Carrier:
• 8620 heat treated (case hardened to SAE-AMS-6875). QPQ / nitride / melonite coated

Bolt:
• 9310 Heat treated (case hardened to SAE-AMS-6875) with additional cryo freeze for extra strength
• Shot peened precision ground diameters
• Magnetic particle inspected to ASTM E1444 aircraft quality inspection procedure for molecular soundness and longer life of the Bolt

Extractors:
• Aircraft quality alloy steel shot peened
• Heat treated to military drawing specification SAE-AMS-6875
• Phosphated to 5.3.1.3 of MIL-STD-171.

Gas key:
• Gas key bolt, grade 8 fully knurled
• Gas key, aircraft quality steel heat treated to SAE-AMS-6875 QPQ HT PROCESS

Cam Pins:
• Precision machined.
• Heat treated to SAE-AMS-6875
• Phosphated to 5.3.1.3 of MIL-STD-171

Firing Pin:
• Machined and precision ground for accuracy
• Heat treated to military drawing specification per SAE-AMS-6875
• Chrome lined per 1.2.2 of mil-std-171

Firing Pin Retaining Pin:
• Unique designed custom steel pin contouring the carrier body
• Heat treated to SAE-AMS-6875
• Phosphated to 5.3.1.3 of MIL-STD-171

Ejector:
• Precision machined
• Heat Treated to SAE-AMS-6875
• Phosphated to 5.3.1.3 of MIL-STD-171

Extractor Spring:
• ASTM spec Music wire with stress relief process for spring durability
• Black insert as per current Mil-Spec viton “O” ring, high temp and oil resistant

Gas Rings:
• 3 pc. stainless steel per Mil-Spec.

NO shipping to Hawaii, Alaska or Canada! NO international shipping all must be within the 48 Contiguous United States! NO APO/PPO/FPO’s, if you have family members here in the 48 US you can ship to them and they can make arrangements for shipping.