Superlative Arms .750" Adjustable Piston System - Pistol Length - Solid - Melonited - Low Pro - AR15

Superlative Arms .750" Adjustable Piston System - Pistol Length - Solid - Melonited - Low Pro - AR15

Transform your AR-15 into a precision-tuned, recoil-taming machine with the Superlative Arms Patented Bleed Off® Adjustable Piston System. Engineered for elite shooters and tactical professionals, this low-profile, pistol-length gas system uses a revolutionary Bleed Off® design to vent excess gas forward—dramatically reducing heat, carbon buildup, and internal pressure.

Unlike conventional adjustable blocks that restrict flow, this piston system ensures cleaner operation, smoother cycling, and extended component life. Whether you're running suppressed, using an SBR, or simply want a more refined build, this kit delivers unmatched reliability and performance with minimal maintenance.

Built from rugged 416 stainless steel and finished in corrosion-resistant Melonite QPQ, every component is crafted for durability and precision. With 30 locked adjustment positions and a patented external detent system, you get total control without the risk of carbon fouling or screw erosion.

Patented Bleed Off® Technology
Vents excess gas forward, reducing blowback, heat, and carbon buildup for cleaner operation.

30 Locked Gas Adjustment Positions
Front-mounted screw allows precise tuning for suppressed or unsuppressed setups.

External Detent System
Adjustment detent is located outside the block, eliminating contamination and carbon lock-up.

Low-Profile Design
Compact 1" attachment length fits under most handguards for streamlined builds.

Suppressor & SBR Optimized
Bleed Off port exhausts excessive pressure, improving comfort and reliability in short-barreled or suppressed configurations.

No Screw Erosion or Seizing
Adjustment screw doesn’t restrict gas flow, preventing wear and ensuring long-term reliability.

Anti-Tilt Carrier Design
One-piece carrier with anti-tilt skis and dimpled key ensures perfect op rod strike and smooth cycling.

Premium Materials & Finish
Gas block made from 416 stainless steel with Melonite QPQ finish; carrier crafted from 8620 steel with DLC coating.

Complete Installation Kit
Includes hex keys, op rod, carrier, optional bushing, and setup instructions with QR code video tutorial.

Specifications

• Firearm Type: AR-15
• System Type: Adjustable Piston Kit
• Gas System Length: Pistol
• Op Rod Length: Pistol
• Op Rod Weight: 0.6 oz.
• Gas Block Size: .750" Barrel Diameter
• Gas Block Style: Solid, Set Screw
• Gas Block Material: 416 Stainless Steel
• Gas Block Finish: Melonite QPQ
• Gas Block Weight: 2.5 oz.
• Attachment Length: 1"
• Gas Adjustment: 30 locked positions, front-mounted screw
• Bleed Off Port: Patented front-facing vent
• Carrier Type: Right Hand, Full-Auto, AR-15
• Carrier Material: 8620 Steel
• Carrier Finish: DLC (Diamond-like Carbon)
• Carrier Weight: 9.6 oz.
• Total Kit Weight (Packaged): 1 lb. 4.9 oz.
• Bolt Assembly Compatibility: Toolcraft Bolt Assembly (sold separately)
• Bolt Material: Carpenter 158 Steel, DLC Finish
• Extractor: 4140 Steel
• Cam Pin: 4140 Steel, DLC Finish
• Firing Pin: Hard Chrome/Ground 8740
• Gas Rings: Mil-Spec (3)
• O-Ring: Mil-Spec
• Testing: MPI Tested, Shot Peened

Included

• (1) Piston System Gas Block Assembly
• (2) 10-32 x 1/4" Set Screws
• (1) Piston System Carrier (bolt, cam pin, firing pin, and firing pin retainer not included)
• (1) Piston System Op Rod
• (1) Spring for Op Rod (optional)
• (1) Receiver Bushing & Installation Tool (optional)
• (1) 3/32" x 6" L-Shaped Hex Key (Ball-End Allen / Torx T-15 Tool)
• (1) 9/64" x 6" Hex Key (for gas block plug)
• (1) Installation Instructions & QR Code for Video Tutorial
• (1) Superlative Arms Sticker