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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 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.
This is a 223/5.56/300 Blackout bolt carrier group.
This AR BCG will not work with 6.5/6.8/308 etc.
|Bolt||Shot Peened; HPT/MPI|
|Bolt Material||Carpenter 158 Steel|
|Extractor O-ring||Viton; Mil Spec|
|Carrier Material||8620 Steel|
|Carrier Design||M16 Full Auto Style, Properly Staked|