Spike's Tactical 5.56/.223 M16 Cut Bolt Carrier Group - Phosphate - ST5BG01

Your bolt carrier group is one of the most critical parts of your build. Don’t buy an imitation. This is the same BCG Spike’s uses on their builds. These complete bolt carrier groups come magnetic particle inspected and high pressure tested. The carrier is made from 8620 steel and the bolt from no. 158 carpenter steel. The gas key is properly staked, the extractor spring has been upgraded with an O-ring for increased tension, and all surfaces are MIL-SPEC heavy phosphate coated or internally chrome lined. The Spike’s Tactical Spider Logo is engraved on the right side of the carrier to show through the ejection port. Assembled BCG weighs 11.6 oz.

Includes:

• Firing pin with hard chrome finish.
• Cam pin phosphate finish.
• Retaining pin.

Bolt carrier:

• 8620 tool steel.
• Full Auto/M16 cut.

Bolt:

• 158 carpenter steel.
• Shot peened.
• High pressure tested.
• Magnetic particle inspected.

Extractor:

• 8620 tool steel.
• Phosphate finish.
• Extractor spring.
• Black extractor insert.
• Viton O-Ring.

Gas key:

• 8620 tool steel.
• Grade 8 hardware.
• Properly staked.
• Chrome interior.