SILENCERCO SMITH & WESSON M&P THREADED BARRELS
These high quality barrels are manufactured by KKM for SilencerCo and come with a thread protector.
The M&P 9mm is threaded 1/2×28 and the M&P 45 is threaded .578×28. Both are made of 416R stainless and finished in black nitride. These M&P barrels will work on 1.0 versions only.
This barrel does not work with version 2.0