JamesCanby
Active Member
Does anyone know if a +P barrel is available for the standard (non +P) S&W M&P 9mm?
Does anyone know if a +P barrel is available for the standard (non +P) S&W M&P 9mm?
The M&P should be able to handle +P ammunition without problems without any modifications. I wasn't even aware there was a "standard" and a "+P" version and couldn't find anything in a Google search.
What's your source for there being 2 different versions of the M&P?
Here is what my M&P owners manual says:The M&P should be able to handle +P ammunition just fine without any modifications. The same could be said of most other modern polymer pistols - Glocks, XD, P10C, etc. If you only use +P ammunition and run thousands of rounds through it a year, you might see some accelerated wear from the increased pressure, but occasional use should not cause any issues.
In fact, I wasn't even aware there was a "standard" and a "+P" version of the M&P and couldn't find anything in a Google search.
What's your source for there being 2 different versions of the M&P?
Here is what my M&P owners manual says:
• “Plus-P” (+P) ammunition generates pressures in excess of the pressures associated with standard ammunition. Such pressures may affect the wear characteristics or exceed the margin of safety. Use of “Plus-P” ammunition may result in the need for more frequent service.
• “Plus-P-Plus” (+P+) ammunition must not be used in Smith & Wesson firearms. This marking on the ammunition designates that it exceeds established industry standards, but the designation does not represent defined pressure limits and therefore such ammunition may vary significantly as to the pressures generated and could be DANGEROUS.
Sounds like +P is good, but your barrel will wear out faster, and absolutely no +P+ ammo ever.