1911 Mainspring Housing, flat, for full size Government Model, Commander and clones. Machined from aluminum bar stock. Does not include main spring or internal parts. A great choice if you're trying to cut some weight from your 1911 build or upgrade your polymer mainspring housing.
*Does NOT fit Officer's Model, Defender, Bobtail and other 1911 model with shortened or modified frames.
Typical MSH weights for comparison:
- Steel, flat: 1.6 oz
- Aluminum, flat: 0.6 oz
- Nylon, flat: 0.3 oz
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