Product Reviews for 19XP - .223/5.56 AR-15 Muzzle Brake Compensator 1/2-28 TPI Smith & Wesson M&P 15 Sport Muzzle Brake by Edie (2024-05-17 13:56:39) Rating: 5 / 5 - 5 - Excellent Owned Product for: less than 1 month Pros: I put this 223/5.56 AR-15 Muzzle Brake Compensator on my AR-15 Smith & Wesson M&P 15 Sport, and it fits perfectly and works great. It is a heavy-duty high-quality muzzle brake. Cons: Other thoughts: It is made in the USA.