Nighthawk Custom 1911 Mainspring Housing - 25 LPI Flat Checkered - Officer - Carbon

Manufactured by NightHawk Custom
SKU: SP0240
MPN: SP0240
Manufactured by NightHawk Custom
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The Nighthawk Custom 1911 Mainspring Housing is a premium upgrade for your officer size 1911 pistol. The FM Series Mainspring Housing is designed to handle consistent use with strength and longevity that exceeds economy-grade parts. It is a great way to improve the appearance and grip of your favorite 1911. Every mainspring housing is Fully Machined™ from 11L17 carbon steel making them extremely durable and reliable. It boasts 25 LPI checkering on the face creating positive engagement and a confident hand/gun connection. The flat back helps improve the feel of the firearm, especially for those with a smaller hand grip. The carbon steel mainspring housing provides improved durability and aesthetics over plastic and MIM stock offerings. Installation is simple, requiring only minor fitting and offers an instant upgrade to your officer 1911 pistol. The Nighthawk Custom 1911 Mainspring Housing is perfect for the gun hobbyist or recreation shooter who feels comfortable assembling and fitting minor parts. Try one for yourself and you will notice the Nighthawk Custom difference with improved performance in your favorite 1911 pistol.

Note: Gunsmith fitting may be required.

  • 11L17 carbon steel
  • Flat (straight) back
  • Officer size frames
  • 25 LPI checkered grip texture

Nighthawk Custom began manufacturing 1911 pistols and their Fully Machined (FM) Series parts in 2004 based upon the motto “ONE GUN, ONE GUNSMITH.” Today, every pistol a Nighthawk Custom is built from start to finish by a single gunsmith and their FM Series parts represent the highest quality 1911 parts on the market.
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BrandNightHawk Custom
Platform1911 Handguns
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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