The BATTLEARMS XIPHOS series of firearms are designed from the ground up and purpose-built as the next generation, blow-back AR-style pistol caliber firearms. The heart of the firearm is the billet BAD-GS 7075-T6 aircraft grade aluminum receiver and free-float rail handguard with M-LOK attachment points at 3, 6, and 9 o'clock positions. At 12 o'clock is a full-length Picatinny accessory rail with our signature notch cut matching the upper receiver. Every firearm is equipped with a 4150 chrome-moly steel barrel and 8620 steel black nitride blow-back bolt for ultimate reliability and ease of cleaning. Each XIPHOS is built with a patented 9mm buffer system that reduces weight, felt recoil and wear.