F Kensight Mfg Springfield M1 Carbine Rear Sight - Springfield M1 Carbine Adjustable Rear Sight Black $39.01 860-102 show more like this $12.50 Brownells F Kensight Adjustable Rear Sight Assembly M1 Carbine Steel Matte with Peep Aperture - 775265 $40.87 860-102 show more like this 5.00 MidwayUSA F Kensight M1 Carbine Rifle Adjustable Precision Peep Rear Sight, Black, 860-102 $40.87 860102 show more like this Dvor