The Superlative Arms Adjustable Piston System (Superlative Arms part no. SABO-PS-RFD-P750CM) converts a pistol-length AR-15 from direct impingement to a gas piston operating system, using a .750-inch clamp-on gas block that requires no gunsmithing or barrel modification. Pistol-length gas systems run under high pressure and heavy fouling, and piston operation keeps that fouling and heat out of the receiver, which matters even more on a short-barreled build. Superlative Arms built the system with an adjustable regulator, so shooters can dial gas flow down for use with a suppressor or up for reliable cycling with a wider range of ammunition. It is a genuine operating-system upgrade for pistol-length AR-15 owners who want cleaner, more tunable piston reliability.

Key Specifications

• Sized for a .750-inch gas block diameter.
• Uses a clamp-on mount, requiring no barrel modification.
• Built for pistol-length gas systems.
• Features an adjustable gas regulator for tuning gas flow.
• Converts the rifle to gas piston operation, reducing heat and fouling in the receiver.

Frequently Asked Questions

Does this require gunsmithing to install? No, it uses a clamp-on mount that requires no barrel modification.

What gas system length is this built for? Pistol-length.

Buy the Superlative Arms Pistol-Length Adjustable Piston System

Convert your pistol-length AR-15 to a cleaner-running, adjustable piston system without gunsmithing. See more from Superlative Arms or shop our full rifle parts selection. Order it from our Lubbock, Texas gun shop for fast, insured shipping.