The GLFA AR15 450 Bushmaster, model GL15450 BRZ, is a remarkable semi-automatic rifle designed for enthusiasts who demand precision and reliability. This 450 Bushmaster rifle boasts an 18-inch barrel with a 1:24 twist, crafted from either 416R stainless steel or 4150 CRMOV nitride, ensuring exceptional durability and accuracy. The rifle features a cerakote finish, providing a sleek and resilient exterior that withstands harsh environments. Built on a robust aluminum 7075 frame, this GLFA AR15 rifle incorporates a modified M4 feed ramp and a mid-length gas tube with a 0.750 gas block, optimizing performance and cycling efficiency. Its mil-spec polymer grip ensures a comfortable and secure hold, while the 15.25-inch aluminum 6061 full picatinny rail handguard offers ample space for accessories. With an overall length of 35 inches and a lightweight design at 6.4 lbs, it is easy to handle and maneuver, making it suitable for various shooting applications. The rifle includes a 5-round magazine and a muzzle brake designed to be wrench tightened at a 6-degree forward angle without the need for Loctite, enhancing shooting stability and control. Although this 18-inch barrel rifle does not come with sights, its mil-spec 5.5-6 lb pull trigger ensures a crisp and reliable firing experience. The oversized 7075 upper receiver contributes to the rifle's robust construction, making it a dependable choice for hunting or target shooting. Whether you're seeking a high-performance 450 Bushmaster rifle for big game hunting or a versatile semi-automatic rifle for range shooting, the GLFA AR15 450 Bushmaster offers a blend of quality craftsmanship and advanced features that cater to serious shooters.