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Posted: 8/8/2025 9:34:47 AM EDT
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Do the 5.56 and 7.62 nut sack attachment points have the same dimensions? Thanks. |
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I had a London Bridge Mk48 nutsack a while back. I had to remove the trigger guard on my M249S to mount it, but with the trigger guard off it would lock in just fine. I never loaded or fired it though, so I have no idea how it would feed. Edit: I looked up the Black Widow lower and my opinion would be no, it will not fit due to how close the front of the trigger guard is, and you have no way of removing it. |
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Originally Posted By FantasticPlastic: Dang. Thanks. The size difference is subtle. If you hold a Mk48 nutsack in your hand without an M249 version to directly compare it to, it seems like it would fit just fine... but it is slightly wider, just enough to hit the trigger guard on an M249, and I would assume the trigger guard of that lower receiver. Perhaps you could mill out some space on the lower at the trigger guard to fit it, but how much I have no idea, and it might compromise the integrity of the lower at that spot. |
| The feed box weldament that the drums clip into on the gun is the exact same part on the Mk46 and the mk48. The drums themselves are different with 7.62 being obviously larger. |
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