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Would it be worth obtaining a 10.5"-11.5" barrel for the Colt Model 6951?

Which barrel lengths are you talking about?

You mention both 10.5-11.5 & 5.5-6.5?

What advantage?

Major loss of velocity, major increase in muzzle blast & noise. Increased wear & tear, because of the increased pressure from the gas port being closer to the chamber, unless you put an adjustable gas block on it.

If you want a toy go for it.
 
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A 10.5" barrel or 11.5" barrel would still be a step up over the 4.25"- 4.7" barrels of most service-size pistols. An added FRT could come close to equating SMG performance. A binary trigger wouldn't raise too many eyebrows. Bear in mind this PPC has no forward assist (as if the original 5.56/.223 ever needed one). The 16.1" barrel provides great ballistics, but indoors the longer barrel can become cumbersome.

House clearing would be easier, and the muzzle blast would be limited by the birdcage (A2-type) flash hider.

This is the reasoning behind my proposition.
 
I saw a gun vid a few years ago showing 7-8" barrel maximizes velocity on most common 9mm rounds. Shorter and longer barrels than that slows the bullet. At least that's what the video demonstrated. Classic Firearms iirc. Maybe not what you asked, but it is why I chose the SP5 over the SP5K when I made that purchase. And that assumes max velocity is a goal...
 
Jfal said:
I saw a gun vid a few years ago showing 7-8" barrel maximizes velocity on most common 9mm rounds. Shorter and longer barrels than that slows the bullet. At least that's what the video demonstrated. Classic Firearms iirc. Maybe not what you asked, but it is why I chose the SP5 over the SP5K when I made that purchase. And that assumes max velocity is a goal...
Click to expand...
Ballistics By the Inch tends to differ with you. (These are from real guns, not test barrels.)
 
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