Features
- Mil-Spec dimensions
- Bolt Carrier Group Material:
- Case Hardened 8620
- Steel Finish: Black Nitride.
- This advanced low friction coating minimizes the need for lubricants.
- Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked into a milled “valley” to ensure proper positioning.
- 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.
- Bolt Material: Case Hardened 9310 Steel.
- Finish: All Bolt components Black Nitride
- Extractor: 4340 Steel Mil Spec
- Extractor Spring & O-Ring Combination
- MPI: Magnetic Particle Inspected
- HPT: High Pressure Test
- Made in USA
- Carrier fits AR15/M4 compatible style Rifles (i.e.) .223/5.56mm, .300 Blackout
By ordering United Survival First Aid Kits (Medical Kits) or other products, you warrant that you have received the proper training and required authorization, if applicable, to use said medical products. United Survival assumes no liability for the misuse of any product or kit. You must know and understand your local/ state laws.
United Survival reserves the right to replace/switch any product with one of equal quality or value at any time at our discretion.
Descriptions on this website (unitedsurvivalstore.com) or any affiliate website are intended only to describe the products, and should not be construed as medical advice. Consult your healthcare provider for any and all medical advice.
 WARNING: Cancer and Reproductive Harm
http://www.P65Warnings.ca.gov
We do not ship firearm parts to the following states. If you place an order for firearm parts to be shipped to these states, your order will be canceled and you will be charged a 15% restocking fee. We apologize for the inconvenience of these states' communism.
- Colorado
- Delaware
- Massachusetts
- Washington D.C
- Hawaii
- Puerto Rico
- Alaska
- Connecticut
- Illinois
- Maryland
- New Jersey
- New York
- Washington
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