Firearm Machining Advantages

Machining is a subtractive manufacturing technique that cuts, grinds, and otherwise transforms metal and plastic blanks into new shapes. This process has several advantages when it comes to manufacturing gun parts and firearms, including:

  • Precision: Computerized machining tools can follow detailed specifications to create high-volume runs of identical products within tight tolerances. This exceptional precision is essential for producing firearm components that feature complex interconnecting elements.
  • Documentation and Certification: At Buell Automatics, we’re compliant in the ISO 14001 environmental management system, IATF 16949:2016, and more. We can document every production run so they have identification systems, a record of specific treatments, and a comprehensive manufacturing history.
  • Varied Material Options: Machining processes work well on a broad variety of metal and plastic substrates. We carefully select each component based on the production process and design specifications.

Firearm Machining Materials

Our specialists at Buell Automatics work with the following materials to manufacture our custom firearm parts. 


  • Aluminum
  • Brass
  • Bronze
  • Copper
  • Nickel alloys
  • Stainless steel
  • Titanium
  • Other alloys


  • Acetal
  • Delrin
  • High-density polyethylene (HDPE)
  • Nylon
  • Polytetrafluoroethylene (PTFE)
  • Polyvinyl chloride (PVC)

Flexible Specialized Firearm Machining and Material Options

When you partner with Buell Automatics, you can choose from a large selection of standard and customized parts. We specialize in firearm components for commercial and military firearm markets, and all parts are precisely produced using state-of-the-art computer numerical control (CNC) machining or if practical, multi-spindle screw machines.  

Some of the firearm components we are often asked to produce include: 

  • Bolt Carriers: Bolt carrier groups allow for semi automatic firing. Each bolt carrier must carry out a distinct set of mechanical steps when the firearm’s trigger is pressed. To perform these measures, precision engineering and tight tolerances are critical.
  • Choke Tubes: The choke is the tapered portion of a gun barrel. Well-made chokes increase the gun’s range and accuracy. Airguns, pistols, rifles, and shotguns often have choke tubes made from metal.
  • Firing Pins: Firing pins generate a strong impact force against a gun’s primer. This pressure triggers the ignition event in a gun. We can manufacture standard and customized firing pins for firearms, and we work with aluminum, steel, titanium, and other metals.
  • Pistol Components: We produce action, clip, barrel, and frame parts for a variety of handguns and pistols.
  • Pivot Pins: We can create different pivot and detent pins with specialized end shapes and configurations.
  • Safety Locks: Safety locks are essential safety mechanisms in firearms that reduce the risk of accidental firing and injury. At Buell Automatics, we create safety locks that gun owners can rely on.
  • Shell Bases by Caliber: Unlike bullets, a shell is a cartridge that carries a payload. Artillery weapons and shotguns typically use shells, which need a solid, well-shaped base for accurate firing and safe loading and transport.
  • Suppressor Baffles: A baffle-based suppressor is a common type of gun silencer. Baffles slow gases inside of the firearm suppressor, cooling them to reduce the amount of noise that escapes when a bullet is fired. Many suppressors or silencers have multiple baffles that work together to reduce the decibel range of gunfire.
  • Suppressor Cores: Another type of gun suppressor called a monocore  has a solid cylindrical design with holes and baffles machined out of the core.

Custom Firearms Parts and Components Machining with Buell Automatics 

At Buell Automatics, we specialize in machining high-quality firearm components from metal and plastic. We manufacture custom gun parts to strict tolerances and with minimal variability between runs. If you need a specialized custom gun component produced, contact us today to learn more about our capabilities or request a quote to start your order. 

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