San Tan Tactical STT-15 18" 6mm ARC Rifle, Black - CA Featureless

Price: $2,955.00
Out of stock
as of 01/22/2022 2:07PM CST

Store Inventory
Available OnlineOut of stock
Fountain Valley, CAOut of stock
The Colony, TXOut of stock

Please check your local/state laws prior to ordering
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Inter-Store Transfer

If this item is out of stock at your local RifleGear but available at our other location, no problem. Just place your order and select In-Store Pickup as the shipping method. As long as the item is legal in your location, we will transfer the item for you. 

In collaboration with San Tan Tactical, Hornady Mfg and Proof Research, the new 6ARC rifles utilizes Hornady's 6ARC cartridge originally developed for a specialized group within the US DoD. The addition of a Proof Research premium carbon fiber barrel takes this setup to the next level.

The Hornady 6mm ARC round is a high performance and match accurate offering. The US DoD tested 6ARC round is extremely versatile and can fulfill the needs found on larger calibers.

The San Tan STT receiver is machined from billet 7075-T6 aerospace aluminum. Finished in a proprietary special burnished bore for a compacted internal surface, resulting in a smoother finish. The bore, receiver extension face, barrel nut threads and barrel extension surfaces are machine din one operation to ensure concentricity.

STT Lower Features:
Huge 1.38” Integrally Machined Magazine Well Flare
Ambidextrous Quick Attach Detach Sling Swivel Points with Anti-Rotation Stops
Ambidextrous Bolt Release
Ambidextrous Magazine Release
Bullet Pictogram Safety Selector Markings
Set Screw Trigger Creep Adjustment
Set Screw Upper Take Down Tension Adjustment
Shooter Ready Finger Rest
Oversized Winter Trigger Guard Perfect for Gloved Hands
Dowel Screw Assembly
Ultra-Grip Texture on All Controls
STT Upper Features:
San Tan Tactical Truss Pockets for Increased Structural Rigidity
Cut from a Single Billet 7075 -T6 Aerospace Grade Aluminum
Shell Deflector
Fully Assembled with Forward Assist & Ejection Port Cover
Machined in T Markings for Easy Optic Relocation
Machined with M4 Feed Ramps
Machined to Mil-Spec Standards
Interfaces with all AR15/M16/M4 Systems & Accessories
Compatible with Multiple Rails, Anti-Rotation Tabs & Pins
Compatible with All Known Battery Levers
No Roll Pin Design - Forward Assist Attaches Via Threaded Dowel Pin


Caliber 6mm ARC
Capacity *20-rd, Duramag 6.5 Grendel
Operation Direct Impingement, Rifle-Length
Barrel Length 18"
Barrel Type Proof Research Carbon Fiber
Weight 6lbs 13oz
Receiver STT 7075-T6
Trigger CMC 3.5lb Single Stage
Pistol Grip Magpul MOE+
Stock Magpul CTR
Handguard STT 15 16" MLOK
Sights None
Bolt Carrier Group STT Suppressor Optimized Enhanced BCG, HPT MPI Bolt, Crane O-ring Upgrade
Finish Black Type 3 Hard Anodized
Muzzle A2 Flash Hider, 5/8x24

* Magazine(s) are not included for Restricted States.

Please check your local/state laws prior to ordering

Important note about our photos
While we make every effort to ensure that our product photos are accurate, manufacturers occasionally change the design of components such as triggers, sights, or magazines without notice. Also, modifications to the firearm or component may be required in order to meet specific state compliance requirements. While we make every effort to accurately describe and illustrate the item you are going to receive, there may be visual differences on various components that do not affect functionality.

Federal law requires that you be 21 years of age or older to purchase a handgun, frame or receiver. To purchase a shotgun or rifle, you must be 18 years of age or older. 18 U.S.C. Section 922(b)(1).

As required by federal law, this item may only be shipped to a dealer with a valid Federal Firearms License. If you do not specify the name and shipping address of your dealer, your order will be delayed.
 Click here for more information on buying a gun online.  

California Residents
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to


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