The SIG M400 is a popular AR-15 rifle (and one of our favorites) that is known for its accuracy, reliability, and value. It is a great choice for both beginners and experienced shooters. The SIG Sauer M400-SDI XSeries is one of the latest iterations of Sig’s line of AR-style rifles.
Utilizing some advancements and upgrades from other popular designs that Sig has recently released, this M400 is one of the most modern and feature-rich AR-15s right out of the box.
Any gun owner, whether new to the scene or a seasoned vet, knows that ARs are some of the most popular firearms on the market. It can be difficult to navigate your way through an AR purchase, sifting through hundreds of companies and designs. From building to buying a complete rifle, there are many ins and outs to figuring out value, quality, and what design best fits the shooter.
This in-depth M400-SDI XSeries review will highlight the pros and cons of a rifle that is produced by one of the largest and most trusted brands in the world.