Precision Machining

Our craftsmanship and state-of-the-art technology allows us to produce complex parts with accuracy and low costs

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We are machining experts. We constantly fine-tune our processes and programs to deliver the performance you expect, with competitive pricing and great turnaround times. Our finest engineers and craftsman deliver components with high level accuracy that saves you time, improves your bottom-line, and helps you gain efficiency.

SIMS has machines with various configurations that enable us to produce parts ranging from micro-class all the way to 5-axis parts. Our capabilities are your biggest advantage – we are able to optimize our manufacturing processes to create value for you. We eliminate the challenges, you capture the market.


SIMS has multi-axis CNC vertical and horizontal machining centers. Some of them are installed with pallet changers for improved efficiency and reduced cost in high volume production.


  • 3 – 5 Axis Milling
  • Drill Tap Center
  • Vertical Machining Center
  • Horizontal Machining Center


SIMS has both conventional and Swiss-style CNC Lathes. Our Conventional-style lathes are multi-axis single or twin spindle machining centers that can machine up to 3 inches in diameter. Our Swiss-style lathes can machine up to 1.5 inches in diameter.


  • 2 & 3 Axis Turning
  • Swiss Style Sliding Heads
  • Turn Mill Centers
  • Swiss Lathes – up to 9 axis turning

Firearm Components

We specialize in the contract manufacturing of some of the most complex firearm components. Our engineers are capable of taking products from drawings or CAD data to a highly robust and reliable manufacturing process, yielding consistent quality and accuracy. We are also capable of reverse-engineering samples in-house to produce spare parts.


  • Slides
  • Firing Pins
  • Springs
  • Trigger Bars
  • Locking Blocks
  • … and more!

We can produce all of the internals (upper and lower) for Glock and SIG. All of our firearm components are proudly designed, engineered, and manufactured in the USA.

Regulatory Compliance

SIMS is Type 07 FFL licensed and complies with ITAR regulations. This certifies that we are a licensed manufacturer of firearms other than destructive devices, and we have the capability to produce or export components for defense.