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Posted: 2/18/2012 5:44:16 PM EDT
| Folks, I've got an A2 clone with a 5.56 chambered 20" chrome-lined heavy barrel and the FSB has this marking - <B>1 on the right side and no markings on the left. Any idea who made this FSB? |
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Quoted:
Folks, I've got an A2 clone with a 5.56 chambered 20" chrome-lined heavy barrel and the FSB has this marking - <B>1 on the right side and no markings on the left. Any idea who made this FSB? They're a commodity item. It's more about F-marked (A3 height) or not (A1/A2 height). 
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Quoted:
Quoted:
Folks, I've got an A2 clone with a 5.56 chambered 20" chrome-lined heavy barrel and the FSB has this marking - <B>1 on the right side and no markings on the left. Any idea who made this FSB? They're a commodity item. It's more about F-marked (A3 height) or not (A1/A2 height). <a href="http://imageshack.us/photo/my-images/716/fsbcomparison.jpg/" target="_blank">http://img716.imageshack.us/img716/8696/fsbcomparison.jpg</a> Not intended as a high-jack. Not all 'F' height FSB's are stamped as such. You need to measure them |
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Thanks. Yep, it's a regular standard FSB, I was just curious if that forge marking had any significance. Found out elsewhere that it denotes Bourdon Forge, who makes everything else under the sun and AR FSBs too.  Good find. Here's a snippet that mentions an early and later mark.... http://www.ar15.com/forums/t_3_123/492242_Colt_FSB_Markings.html |
| Direct-Drive, the photo that plinkr415 posted in your link is exactly the marking I've got. Broke out the caliper and double-checked - 1.94" tall - standard FSB. Then I got curious. I built an IDF Carbine clone awhile back and used a lightweight profile CAR 16" barrel from Model 1 Sales so I checked the FSB on that, which is supposed to be a standard height FSB also. It has the same markings - <B>1 and is 1.94" tall. |
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