Superlative Arms .625 Adjustable Piston System - Rifle Length Gas - Solid - Melonited

SKU# 2562 | by Superlative Arms
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Manufacturer Description

The Superlative Arms Patented "bleed Off", Gas Piston System For The AR-15 Platform Adjusts The Gas Flow By Bleeding The Gas Out Of The Block Instead Of Restricting The Flow Like Conventional Adjustable Blocks.


  • The pressure used in the block is reduced only to the amount required to drive the bolt carrier. The remaining gas / pressure are bled out of the block allowing the system to run much cleaner and cooler.
  • Reduction of felt recoil.
  • Patented adjustment detent is located outside of the block and therefore no contamination.
  • The gas adjustment screw does not restrict the gas flow; therefore there is no erosion or seizing of the screw / no loss of detent due to carbon build up. Although it is removable, we have added a safety mechanism, which stops you from unintentionally backing the screw all the way out.
  • When using SBR’s and / or suppressors the bleed off port allows the excessive pressure to be exhausted out of the block reducing blow back.


  • Firearm Type: AR15
  • Gas Length: Rifle
  • Barrel Diameter: 0.625"
  • Weight: 12.7 oz.
  • Piston Block Attachment Type: Solid, Set Screw
  • Piston Block Material and Finish: 416 SS, Melonite
  • Carrier: Ion Bonded, 1 pc. Carrier w/ Skis and Dimpled Key
  • Gas Adjustment: (Patented) 30 Locked Positions, Front Of Block
  • Bleed Off Port: (Patented) Front Of Block


  • Piston Block Assembly
  • Carrier (bolt not included).
  • (1) 3/32" X 6" Hex Key (tool to adjust gas screw)
  • (1) 9/64" X 6" Hex key (tool to install/remove gas block plug)
  • (1) Bushing and insert tool (Just an extra.... we have had some requests. Use at your discretion).
  • Installation Instructions & QR Code For Video Tutorial

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