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Battle Arms Development Enhanced Bolt Carrier Group (EBCG) - Full Auto

Battle Arms Development

  • The Battle Arms Development Enhanced Bolt Carrier Group was designed to reduce carrier tilt and the key bearing surfaces are relocated to increase reliability. Having fewer points of contact and an ultra-hard & bricious black nitride surface layer reduce friction and improves function.  

    • Full Auto M16 bolt carrier.
    • Bolt Carrier: 8620 Steel Case Hardened, Machined from Billet, Laser Engraved Logo
    • Firing Pin:  8740 Steel, Centerless Ground, Hard Chromed
    • Gas Key:  4130 Steel with Grade 8 Screws, Properly Staked, Machined from Billet
    • Cam Pin:  4340 Hardened Steel
    • Finish:  Black Nitride finished with an ultra-hard, corrosion resistant top surface layer for wear resistance and minimal need for lubricants.  Most importantly, Black Nitride is a surface conversion process with little to no surface build-up (1-2 microns) keeping critical tolerances precise, unlike NiB, Hard Chrome, etc. which are additive and will alter the dimensions of the steel. Laser Engraved BAD Inc. Logo. 
    • Bolt:  9310 Steel, Cased Hardened, Shot Peened, Mil-Spec Dimensions, CNC Ground After Heat Treat, Black Nitride Finished
    • Extractor:  4340 Steel, Manganese Phosphate Finished for Positive Grip (no slippery finish)
    • See Media Tab for more information.
  • Manufacturer Part Number: BAD-EBCG-M16

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  • The MSR Arms Advisor articles are intended to answer some of the most common shooter questions and assist our customers in making the best purchasing decision possible.
  • No questions have been submitted regarding this product. If you have a question regarding this, or any of our other products, please submit them by emailing sales@msrarms.com. We will return your email promptly and post both the question and answer here for our other customers to view. Remember, there are no dumb questions... Thank you, MSR Arms!

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