The Superlative Arms Adjustable Piston System (Superlative Arms part no. SABO-PS-RFD-M750CM) converts a mid-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. Superlative Arms built the system with an adjustable regulator, letting shooters fine-tune gas flow for suppressed shooting, a wider range of ammunition, or to trim recoil impulse on a mid-length gas system. Piston operation keeps combustion byproducts out of the receiver, so the action runs cleaner and stays drier over a long shooting session compared to a direct-impingement gun. It is a genuine operating-system upgrade for mid-length AR-15 owners who want piston reliability without a full upper rebuild.

Key Specifications

• Sized for a .750-inch gas block diameter.
• Uses a clamp-on mount, requiring no barrel modification.
• Built for mid-length gas systems.
• Features an adjustable gas regulator for tuning gas flow.
• Converts the rifle to gas piston operation, keeping the action cleaner.

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? Mid-length.

Buy the Superlative Arms Mid-Length Adjustable Piston System

Convert your mid-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.