Nighthawk Custom’s FM Series 1911 mainspring housings and magwells are precision machined from a solid 11L17 carbon steel billet, then hardened to resist wear from magazine changes. The tapered magazine funnel can be blended to seamlessly fit any standard 1911 and serves to guide your magazine home in high-stress, high-speed situations. Perfect for both competition and carry uses, the integrated magwell reduces reload time when it matters most. This 1911 mainspring housing features 25 LPI serrations to improve purchase on the pistol.
*Gunsmith fitting may be required
The Nighthawk Custom line of Fully Machined parts are designed to be the gold standard in the 1911 parts industry. All Fully Machined parts have been fully CNC machined from solid steel billets. We never use cast, metal injected moldings or polymer parts. In order to create the World’s Finest 1911s, only the best materials can be used. That is why you can trust Nighthawk Custom Fully Machined parts in your 1911.
All Fully Machined parts are backed by a lifetime warranty.
- 11L17 Carbon Steel
- Flat (Straight) back
- For Use on Government Size Frames
- 25 LPI Serration Grip Texture
- 2-Piece Magwell Design
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