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Posted: 10/31/2005 6:04:44 PM EDT
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I've got a few questions about these muzzle devices. Firstly, does anyone still sell them, or were they ever commercially manufactured? Were they designed to screw onto a threaded muzzle or did they simply slip and lock on? If the term I'm using is confusing, I'm talking about "duckbills" as in the muzzle device that is designed to create an immediate wide pattern, without using chokes or similar devices. |
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As far as I know, no slip-on duckbill or other shotgun device was ever made. The problem is, the blast from a shotgun and the shot impacting the device will quickly blow anything off that isn't REALLY secured. The original SEAL Duckbill devices as used in Vietnam began to fail from the blast because they had an open "prong" type of design. Sheer metal fatigue from the impact caused the two prongs to open up, reducing the spreader effect. To prevent this the design was changed to one where the two prongs were joined by a ring-like end. Just slipping a device on the barrel simply wouldn't work, and unless you have a really strong front sight for it to lock onto, it's going to quickly sail downrange. If you know a good machinist, you could have a spreader made that would thread into the screw-in choke on a shotgun barrel, but there would be the problem of indexing the device properly. There are a number of people who would like to experiment with a duckbill shot spreader, but strangely no one is making anything to fill the need. |
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