I have a barrel from a Colt 6520 that I want to install on a flat top upper. I found a source for "F" marked fsb but dont know which one to get. I dont know whether the barrel is .650 or .750 under the fsb.
Thanks
John Prescott
I have a barrel from a Colt 6520 that I want to install on a flat top upper. I found a source for "F" marked fsb but dont know which one to get. I dont know whether the barrel is .650 or .750 under the fsb.
Thanks
John Prescott
Your FSB bore is .625" (5/8") and is a F height FSB. If you use a flat top receiver with that barrel you'll need the .040" Bushmaster front sight post.
Chief Armorer for Elite Shooting Sports in Manassas VA
Chief Armorer for Corp Arms (FFL 07-08/SOT 02)
I have a quick FSB question (and I appologize for the slight hijack, but I'd rather not start a new thread for such a trivial question).
I'm going to build an iron sighted 20" rifle. Should I use an "F" marked FSB or a nonmarked one? Does it matter?
A man without a sense of humor has no sense at all.
Chief Armorer for Elite Shooting Sports in Manassas VA
Chief Armorer for Corp Arms (FFL 07-08/SOT 02)
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