Check the listing for details. Wilson Combat Full-Size, 1911 Mainspring Housing, Round Butt, Stainless # 92SFRB. Condition: New. Listed at 58.95 USD. Mainspring Housing, Flat, Full-Size, Round Butt, Stainless 92SFRB NEW!! A Wilson Combat checkered mainspring housing is a great way to improve the grip and appearance of your 1911 handgun. Our mainspring housings are fully machined from bar stock with real cut checkering. These high quality housings are a drop-in upgrade for handguns with cast or polymer housings and the same parts used in our custom guns. ~ Fully Machined from bar stock stainless steel with real cut checkering ~ Low luster, glass bead stainless steel finish ~ Drop in fit for most full size 1911 handguns. Minor fitting may be required in some guns. Exclusive Wilson Combat round butt design for enhanced concealment and improved grip feel without reducing the hammer spring or drilling a new mainspring housing pin hole. The round butt mainspring housing requires frame reshaping/refinishing after installation. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Your TRACKING NUMBER will be sent to your email address , when it SHIPS FREE on the SAME DAY to you.