# SanTan Tactical STT-15 6mm ARC Rifle - Precision & Power Redefined

**Brand:** San Tan Tactical
**Category:** AR Style Rifles
**Caliber:** 6mm ARC

## Specifications

- **Caliber:** 6mm ARC
- **Barrel Length:** 18"
- **Capacity:** 28 rounds
- **Weight:** 98.08 oz
- **UPC:** 680599034718
- **SKU:** UCByu4Blm

## Description

The SanTan Tactical STT-15 is an AR-platform sporting rifle chambered in 6mm ARC with an 18-inch barrel and 28-round capacity. The 6mm ARC (Advanced Rifle Cartridge) was designed to deliver a flat trajectory and good ballistic coefficient from a standard AR-15 magazine well, making it useful for both target work at distance and hunting. At 18 inches, the barrel offers a good balance between velocity retention and overall rifle length.

### Key Specifications
- **Barrel Length:** 18 inches
- **Caliber:** 6mm ARC
- **Capacity:** 28 rounds
- **Condition:** New in Box
- **Finish:** Black
- **Manufacturer:** SanTan Tactical
- **Manufacturer Part Number:** STT-15-6ARC
- **Model:** STT-15
- **Type:** Modern Sporting Rifles
- **UPC:** 680599034718

### Detailed Features
The 6mm ARC round runs in a standard AR-15 bolt carrier group (with a 6mm ARC-specific bolt), and feeds from modified AR-pattern magazines. Recoil is manageable given the intermediate cartridge, and the 28-round capacity keeps you shooting without frequent magazine changes.

SanTan Tactical builds the STT-15 as a complete rifle ready to use from the box. The black finish is standard hard anodize on aluminum receivers. The 18-inch barrel is longer than a standard carbine but shorter than a rifle-length 20-inch tube, so it splits the difference between handling and muzzle velocity.

### Usage Scenarios
The 6mm ARC's long-range ballistics suit hunters who need to reach out past typical .223 distances and competitive shooters who want better wind resistance than 5.56. At the range, the flat trajectory makes holdover calculations simpler at medium to long distances.

## Frequently Asked Questions

**Q: What caliber is the SanTan Tactical STT-15?**

A: The STT-15 is chambered in 6mm ARC (Advanced Rifle Cartridge).

**Q: What is the barrel length of the STT-15?**

A: It has an 18-inch barrel.

**Q: How many rounds does the STT-15 hold?**

A: It has a 28-round capacity.

**Q: Who makes the STT-15?**

A: SanTan Tactical manufactures the STT-15.

**Q: What type of firearm is the STT-15?**

A: It is a semi-automatic AR-platform sporting rifle.

**Q: Where can I buy the SanTan Tactical STT-15?**

A: Compare current vendor offers on this page.

## What Customers Say

*AI-generated insights from customer reviews*

The STT-15 in 6mm ARC gets consistent praise for accuracy at extended ranges. The 6mm ARC cartridge is the main draw. Its ballistic performance at 300-600 yards is noticeably better than 5.56 NATO in comparable rifle weights, and owners who shoot at longer distances appreciate the practical difference.

Build quality is generally rated highly, with SanTan Tactical's construction described as solid and reliable across varied loads. Ergonomics and adjustability get positive mentions, particularly from users who have customized the platform.

The recurring criticisms are price and 6mm ARC ammunition availability. The round is newer and produced by fewer manufacturers than 5.56 or .308, which can limit options and increase per-round cost. Some buyers also compare the STT-15's price unfavorably to established alternatives chambered in more common cartridges. Community feedback on compatible mods and optics is active among owners, which helps new buyers find setups that work.

## Pricing

**1 offers available**

| Vendor | Price |
|--------|-------|
| Grabagun Com | $2297.99 |

## Similar Products

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*Data from [GunsNation](https://gunsnation.com)*