5.56 / .300 BLK Complete Bolt Carrier Group
SpecOp builds rifles, pistols, and parts utilizing the latest in computerized manufacturing. American-made products at an affordable price, backed by a limited lifetime warranty.
The SpecOp M16 Cut Bolt Carrier Group is manufactured to military specifications. With a chrome lined, 8620 carpenter steel carrier, 9310 super alloy steel bolt, and properly staked gas key, this full-shroud carrier group is perfect for you next AR-15 build! The bolt and carrier have been parkerized for corrosion resistance.
Azimuth Technology has the same core values as we do when it comes to manufacturing quality firearm parts. Azimuth will be supplying us with high quality AR15 Bolt Carrier Groups.
This carrier is made to the highest standards! With this being said, you will see a slight price increase with our Bolt Carrier Groups. Want want only the best parts in our firearms for longer lasting function and operation.
Carrier Assembly: The bolt carrier is designed to reduce carrier tilt/cant during recoil and increasing reliability by strategically relocating key bearing surfaces. The enhanced carrier has fewer points of contact resulting in less friction area and the slight increase in carrier mass extends dwell time and ensures proper gas pressures for reliable extraction.
Material: Case-hardened 8620 steel (complete care is taken during the heat treat process, so as to not harm the metal)
Finish: Black Nitride. This advanced low friction coating minimizes the need for lubricants, as well as being very resistant to wear. Most recognize Nitride as “Melonite” or “Isonite”. This is a salt bath nitrocarbonite coating, that has proven to be very good for hard use parts.
Gas Key: 4130 Steel, attached with Grade 8 hardware, torqued and properly staked into a milled “valley” around a fully encased ejection port area, for added strength and rigidity.
Cam Pin: Hardened 4340 cam pin.
Firing Pin: Mil Spec firing pin made of 8740 steel, center-less ground and Hard Chrome coated.
Bolt Assembly: The Bolt is “true” Mil Spec dimension and external surfaces are CNC ground after heat treat for a precision fit. These bolts are held to the highest possible tolerance possible. The “trumpet” area behind the gas rings, where carbon normally collects, is precision CNC Ground after heat treatment, to ensure as smooth of an area as possible, easing clean up, and longevity.
Material: 9310 Case Hardened Steel
Finish: All Bolt components Shot Peened & Manganese Phosphate
Extractor: 4340 Steel, Manganese Phosphate coated
Magnetic Particle Inspected (MPI) and High Pressure Tested (HPT)
Mil Spec Extractor Spring & O-Ring