SBR8 Upper

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SBR8 Upper


The SBR 8" is designed for use with a suppressor. It is configured to keep the overall length to approximately that of a standard carbine by the use of a short barrel and the Seekins Precision MCSR M-LOK hand guard.This allows the handguard to cover part of the suppressor, protecting the shooter from suppressor and letting the shooter use a comfortable support grip further forward on the handguard.

The SBR 8" uses the iRMT-R Upper Receiver - CNC Machined from 7075-T6 billet aluminum. The iRMT-R Upper Receiver’s hand guard mount is machined into the upper to strengthen the receiver and maintain accuracy throughout long shot strings. Coupled with the receiver is the Seekins Precision 12” MCSR M-LOK handguard designed for use with a suppressor. The length allows for a forward hold or closer to the receiver for CQC situations. Both receivers and the handguard are Type III Hardcoat Anodized matte black.

An 8” Seekins Precision match grade barrel is perfect for this suppressed configuration. Each barrel is inspected four times to insure match grade tolerances for maximum accuracy and performance. Chambered in .300 BLK.

Tuning the gas system is critical to maximize performance and reliability. The SBR 8" comes with the Seekins Precision Adjustable Gas Block, Pistol length Gas Tube and M16 Bolt Carrier Group to fine tune the gas system for smoother cycling and operation. All are Melonite coated to resist corrosion and wear. This also aids in easier cleaning, as carbon build up will not adhere to the non-reflective coated surface as much as it does on standard Parkerized finishes.

  • Specifically Made For Use With A Suppressor
  • 8” Match Grade Barrel
  • Pistol Length Gas Sysyem
  • 12” MCSR MLOK Hand Guard
  • iRMT-R Billet Upper
  • Melonited Adjustable Gas Block, Gas tube and M16 Bolt Carrier Group
  • Firing this receiver without a suppressor can lead to catastrophic damage to the handguard as well as your hand


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