The FN, Ruger and Smith & Wesson offerings sport barrel lengths of 4.80″, 4.94" and 5.00" respectively. This makes the 5.7 Rock Compact's 4.3" barrel the shortest yet.

Based on the P90 and built around FNH USA's revolutionary 5.7 by 28-mm ammunition, ... Firearm Accessories. Firearms. Flashlights. Forensics. Investigations. K-9 Equipment & Services. Less-Lethal.

In the spring of 2022, Palmetto State Armory (PSA) released the 5.7 Rock which continues to be the most affordably priced semi-automatic pistol chambered in 5.7x28 mm FN here in the United States.