need help finding a part for 40x

[scooterman27006]

jack i appreciate the help but when i go to e-gunparts.com and click on the 40x some of the parts say i have to have ffl and the rest of them say not in stock - this is really the only online site i have ever used - do you know of any other sites that are a little more user friendly - bolt stop is the name of the part i guess and this remington says 40x on the side and nothing else - its in 22-250 caliber and its the kind that only takes one at a time - no magazine - thanks for the help