BLUED Flat Mainspring Housing, Checkered 25 LPI.
Ed Brown mainspring housings are fully machined from solid bar stock steel. No cheap castings or plastic is used. Sharp checkering is machine cut into each housing for precision and straightness, then finished by hand.The Government Model housing features drop-in installation in all full-size 1911 pistols including full size Para-Ordnance pistols such as the P-14 and P-16.
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