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Posted: 5/20/2006 3:43:44 AM EDT
| Sorry to ask this question, did a search but no answer. Can anyone tell me how to tell the difference? Also, a preban upper has a name- S something, What are the other #'s and letter? Is it SP1? How can you tell who manu. a upper ? I don't see any markings. |
Generally speaking a flash supressor will have an open front and a muzzle brake will have a closed front. The A2 flash supressor found on current military M16 series is both a flash supressor and a recoil compensator. The SP1 would typically come with either a 3 prong flash supressor or a Birdcage flash supressor. |
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