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Posted: 8/22/2008 7:53:53 PM EDT
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I thought I read somewhere that they were not interchangeable due to the locations of the pins being slightly different on each FSB, therefore you can't get a new one for an old barrel. This doesn't seem right to me, though. With as modular a platform as the AR series, why make one part that isn't? Anyone heard this? I'd like to swap mine out for an F-marked FSB at some point. |
Each FSB is individually drilled when initially installed so the pins & holes will be in different locations for each install. New FSB's have NOT been drilled for taper pins for this reason. In order for a new FSB to line up correctly in place of the original one you will prolly have to install a clamp on FSB such as the ones that Armalite uses for example or throw on a gas block which may or may not cover the old holes. I'm sure anything is possible with regard to trying to get a new FSB drilled to fit the old holes with the proper tools & machinery but this would still be more hassle than it's worth IMO. If you want the proper height for a flat top with a non-F stamped FSB then buy a taller FSP such as Bushmaster sells for a couple of bucks. If you just want a F stamped for the cool factor then buy a new barrel with one already installed. |
No, but the barrel ASSEMBLY is "modular". Why change out the FSB? If you have a problem with sight alignment, get the .040" taller front sight post and problem solved. Don't make this more difficult than it needs to be. |
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