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Posted: 6/10/2012 3:57:49 PM EDT
| I have a 14.5" carbine, with a non F-marked FSB. I know some manufacturers have made a1.98" FSB without marking it such (with a 'F' mark), but as I do not have calipers, I am presuming mine is the of the 1.94" variety. How do I change out the sight post/blade with the 1.98" post so I can use iron sights? Everything else on this rifle is 'spec' so I am a little surprised the FSB is not. |
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Unscrew the FSP and replace with the longer one if you have a flattop upper. If you have an A2 upper, it will be fine. Who made your "spec" carbine barrel? The barrel is a Colt. Which Colt barrel? Later 6721 that came originally with an A2 receiver? |
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I don't know which barrel...is there a way to tell which model? The upper is a flat top/M4 upper, so the A2 sight was a bit of a surprise. It the stamping near the muzzle something like this: C MP 5.56 NATO 1/9 HBAR or C MP 5.56 NATO 1/7 Is it 16" or 14.5"? Skinny or Government profile(M4) or heavy and thick? |
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C MP 5.56 NATO 1/7. 14.5"/M4 barrel.
Quoted:
Quoted:
I don't know which barrel...is there a way to tell which model? The upper is a flat top/M4 upper, so the A2 sight was a bit of a surprise. It the stamping near the muzzle something like this: C MP 5.56 NATO 1/9 HBAR or C MP 5.56 NATO 1/7 Is it 16" or 14.5"? Skinny or Government profile(M4) or heavy and thick? |
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