.458 SOCOM / 450 Bushmaster Bolt Carrier Group Nitride QPQ
$114.95
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This is our 458 SOCOM / 450 Bushmaster Bolt Carrier Group. This has the M16 Full Auto rated Carrier with an S7 Tool Steel Extractor for not only reliability but long lasting performance. This is a Mil-Spec Bolt Carrier Group treated with our Nitride QPQ process having an overall hardness of 75 Rockwell. - 8620 Steel Carrier - 9310 Vac-Arc Steel Bolt - 4340 Steel Cam Pin - S7 Tool Steel Extractor - 4140 Steel gas Key - Mil Spec Spring kit - MPI (Magnetic Particle Inspection) Tested - Nitride QPQ treated
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