NEW P90 10.4" SUBSONIC BARREL, 1in7 TWIST FOR THE HEAVIER SUBSONIC PROJECTILES. MADE FROM 416 STAINLESS STEEL FOR A CORROSION FREE LONG LIFE AND PRECISION MADE BY HDD. THESE HAVE A LONGER CHAMBER THROAT FOR THE LARGER BULLETS AND HAVE THE STANDARD 12MM LEFT HAND P90 SPEC THREADS. ALL STANDARD P90 MUZZLE DEVICES FIT ON THIS BARREL. FLASH HIDERS ETC CAN BE ADDED BY SELECTING IN OPTIONS BOX.