The Wilson Combat TRAR9GB91610 AR9 exemplifies superior reliability and unparalleled accuracy, while maintaining the popular handling and controls of the AR platform. This model has been meticulously engineered by Wilson Combat to feature two distinctive AR9 lower receivers with last-round bolt hold open. Uniquely designed to be compatible with the most widespread 9mm service pistol magazines from Glock, they also accept common AR accessories such as furniture, triggers, charging handles, buttstocks, and optics.Made from new billet-machined aluminum, these receiver models incorporate an integrated trigger guard and expanded magwell for rapid reloading. The AR9 operates on a closed-bolt blowback system, offering soft shooting and unwavering reliability with a comprehensive variety of 9mm loads. This system flawlessly feeds all common pistol bullet shapes, including both hollowpoint and +P tactical ammunition.The AR9 is also an ideal suppressor host as it features minimized gas blowback and superior accuracy in comparison to other models. To meet our rigorous quality and precision requisites, the AR9 utilizes Wilson Combat carbon steel match-grade button-rifled 1-10 twist 9mm barrels.