Precision Armament TiTrex 300SD (Severe-Duty Inconel Core)

The TiTrex 300SD swaps the titanium core of the 300Ti for a 3D-printed Inconel 718 core built for heat and round count. It keeps the same 5.9-inch length and 1.65-inch diameter and the same .30-caliber rating from 5.56 and 300 BLK through .300 RUM with no barrel-length restriction, at 11.4 ounces for the body or 13.4 ounces with mount and front cap. Precision Armament pitches it for PRS, duty, training and extended full-auto.

The serial number lives on the XBand, a 17-4 stainless containment ring permanently retained to the core. Because that ring never changes, Precision Armament can swap the printed core for a new one, after damage or when a newer design ships, without cutting or welding and without new NFA paperwork; its manual quotes a typical two-business-day turnaround for a core exchange. Every TiTrex ships with a titanium 5/8x24 OPEN SOURCE direct-thread mount, a titanium front cap, the K-Brake suppressor brake and two wrenches, and the HUB-compatible rear accepts any industry-standard HUB mount for other threads or a QD system.

The Inconel core is what changes the duty rating. Precision Armament lists heavy/SOCOM full-auto for .308 barrels of 12.5 inches and longer and 5.56 barrels of 10.3 inches and longer, with light/limited automatic fire below those lengths, where the titanium core is semi-auto only. The manual also notes the early-use sparking of a printed titanium core does not occur with Inconel.