The SilencerCo S&W M&P 45 ACP Threaded Barrel (brand part no. AC2024) is a direct-fit replacement barrel that adds threading to a Smith & Wesson M&P pistol chambered in .45 ACP. All pistol suppressors require a threaded barrel, and SilencerCo built this line after noticing a market need for high-quality options, holding the threaded barrels to the same commitment to quality found across the rest of its lineup. Machined from 416R stainless steel and finished in black nitride, it is tough enough to hold up under harsh use. A thread protector ships with the barrel to guard the threads when a muzzle device or piston is not installed; running a pistol suppressor also requires a separate piston, sold apart from the barrel.

Key Specifications

• Chambered in .45 ACP for Smith & Wesson M&P pistols.
• Threaded to a .578-28 thread pattern.
• Measures 5.10 inches in overall barrel length.
• Carries a 1:10 RH twist rate.
• Machined from 416R stainless steel for strength and corrosion resistance.
• Finished in black nitride for a durable, low-glare surface.
• Purpose-built for S&W M&P pistol frames.
• Ships with a thread protector to guard the threads when unused.
• Designed for use with a pistol suppressor; a piston is required and sold separately.

Frequently Asked Questions

Do I need anything else to run a suppressor on this barrel? Yes, a piston, which SilencerCo sells separately.

Does it include a thread protector? Yes, a thread protector ships with the barrel for when no muzzle device is installed.

What pistol does this barrel fit? Smith & Wesson M&P pistols chambered in .45 ACP.

Buy the SilencerCo S&W M&P 45 ACP Threaded Barrel

Order the SilencerCo M&P 45 ACP Threaded Barrel from our Lubbock, Texas gun shop to get your M&P suppressor-ready. It is a direct-fit upgrade among our handgun barrels. Add it to your cart for fast, insured shipping direct to your door.