S&W M&P15 PS and PSX (piston AR-15)
This year Smith & Wesson have launched the M&P15 PS and PSX piston operated AR-15 rifles. M&P15 PSX The only difference between the PSX and PS is that the PSX features a Troy 7″ modular quad rail handguard. M&P15 PS model and Piston Operating [Read More…]