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New! San Tan Tactical 1836 Series Ironclad 6mm ARC Threaded AR Barrel Up to $10.00 Off w/ Free S&H — 2 models

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Product Info for San Tan Tactical 1836 Series Ironclad 6mm ARC Threaded AR Barrel

Designed to harness the high-ballistic-efficiency 6mm ARC cartridge in a compact footprint, this 12.5in Ironclad barrel delivers exceptional terminal energy and flat trajectories out of a mid-length platform. Built with dedicated gas porting to manage the pressure curve of 6mm ARC match ammunition, it features a rugged Nitride finish to protect internal rifling and withstand harsh field conditions.image

Specifications for San Tan Tactical 1836 Series Ironclad 6mm ARC Threaded AR Barrel:

Manufacturer: San Tan Tactical
Color: Black
Finish: Nitride
Fabric/Material: 4150 Chrome Moly Vanadium
Caliber: 6mm ARC
Barrel Profile: Medium
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-7.5
Barrel Material: 4150 Chrome Moly Vanadium
Flutes: No
Gun Make: AR Platform
Gas Block Journal Size-Length: 1.13 in
Gun Type: Rifle
Firearms Threads Per Inch: 5/8x24

Features of San Tan Tactical 1836 Series Ironclad 6mm ARC Threaded AR Barrel

  • Rifle-length gas system for minimal felt recoil and extended dwell time
  • Optimized for heavy-for-caliber 6mm match projectiles
  • QPQ Nitride treatment ensures maximum bore lifespan and weather protection
  • Precision button-rifled accuracy

Package Contents:

  • San Tan Tactical 1836 Series Ironclad 6mm ARC Threaded AR Barrel

San Tan Tactical 1836 Series Ironclad 6mm ARC Threaded AR Barrel Orderable Models

List of Orderable Models

  • San Tan Tactical 1836 Series Ironclad 6mm ARC, Threaded AR Barrel, 12.5 inch, Mid Length, Nitride Finish, Black, Medium, STT-1836I-125B-6ARC-N , MPN: STT-1836I-125B-6ARC-N , UPC: 810208845286 , Code: 3R1-ATB-EIJQCIW-STT-1836I-125B-6ARC-N
  • San Tan Tactical 1836 Series Ironclad 6mm ARC, Threaded AR Barrel, 18 inch, Rifle Length, Nitride Finish, Black, Medium, STT-1836I-18B-6ARC-N , MPN: STT-1836I-18B-6ARC-N , UPC: 810208845293 , Code: 3R1-ATB-EIJQCIW-STT-1836I-18B-6ARC-N
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Last updated 2026-10-01 UTC.