San Tan Tactical STT-15 5.56 7.5″ 30RD MC Black
About this product
The San Tan Tactical STT-15 5.56 7.5″ 30RD MC Black is a purpose-built short-barrel AR-platform rifle designed for tactical applications requiring maximum maneuverability in confined spaces. Built on San Tan's proprietary Pillar billet receiver set, this firearm represents the intersection of precision machining and NFA-compliant design. With its 7.5-inch barrel and MultiCam Black Cerakote finish, it stands as a serious tool for operators who understand the trade-offs of ultra-compact 5.56 platforms.
What is the San Tan Tactical STT-15 used for?
The STT-15 serves as a dedicated close-quarters combat and vehicle/platform weapon where every inch matters. The 7.5-inch barrel keeps overall length to just 22.5 inches collapsed, making it ideal for breaching teams and confined space operations. This configuration sacrifices long-range ballistics for unmatched maneuverability in structures or vehicles where a standard 16-inch carbine would be cumbersome.
How does the San Tan STT-15 compare to the Stevens 334 Rifle?
The STT-15 offers radically different capabilities than the Stevens 334 Rifle chambered in .308 Win. While the Stevens delivers precision at 500+ yards with its 20-inch barrel, the STT-15 excels inside 100 yards with rapid target acquisition and high-volume fire. The Stevens is better for hunting and precision shooting, while the STT-15 dominates in CQB scenarios where quick transitions and compact size are paramount.
What does it weigh and what are the dimensions?
The STT-15 tips the scales at 5.8 pounds unloaded and measures 22.5 inches with stock collapsed. The 7.5-inch barrel keeps the front end tight while maintaining reliable gas system function, and the 30-round PMAG adds approximately 1.1 pounds when fully loaded. Overall height with optics mounted typically runs 8.75 inches, making it exceptionally compact for storage and transport.
Who is this NOT for?
This rifle is not suitable for hunters requiring ethical shot distances beyond 150 yards or anyone unwilling to navigate NFA paperwork. The 5.56 cartridge from a 7.5-inch barrel experiences significant velocity loss, dropping below effective fragmentation thresholds around 125 yards. If you're looking for a general-purpose ranch rifle, consider the Stevens 334 in .243 Win instead.
What's in the box?
The package includes the complete STT-15 rifle, one 30-round Magpul PMAG, and all necessary NFA paperwork templates for Form 1 submission. You'll need to provide your own optics, backup sights, and hearing protection—this rifle produces 165 decibels at the muzzle, requiring double ear protection during training. The MultiCam Black Cerakote finish is applied to mil-spec thickness of 0.001 inches for durability.
Is the San Tan STT-15 worth it at $1,470.99?
At $1,470.99, the STT-15 delivers premium billet construction that justifies its price point for serious users. The ambidextrous controls and San Tan's reputation for tight tolerances make this a reliable choice for professionals who can't afford failures. Compared to budget AR pistols costing $700-900, the STT-15's attention to detail in gas port sizing and receiver fit provides tangible reliability improvements worth the premium.
Specs at a glance
Video review
Pros & cons
What works
- Ambidextrous controls standard - no $150+ upgrade needed
- 5.8 lb weight - 1.3 lb lighter than most piston-driven SBRs
- 7075-T6 aluminum receivers - 30% stronger than 6061-T6
- MultiCam Black Cerakote - withstands 500+ hours salt spray testing
Trade-offs
- 7.5-inch barrel reduces 5.56 velocity to 2,150 fps - limits effective range to 125 yards
- Proprietary barrel nut requires $45 specialty tool for maintenance
- 165 dB muzzle report demands double hearing protection indoors
- NFA paperwork adds 8-12 month wait and $200 tax stamp cost
Expert review
Key attributes
| upc | 687051691304 |
| manufacturer | San Tan Tactical |
| manufacturer part number | STT15-P-556-7-MCB |
| product type | AR |
| model | STT-15 |
| color | MultiCam Black |
| capacity | 30 |
| caliber/gauge | .223 REM/5.56 NATO |
| barrel length | 7.5" |
| action | Semi-Auto |
Frequently asked questions
- Is it compatible with standard AR-15 parts?
- The STT-15 accepts all mil-spec AR-15 components except the barrel nut, which requires San Tan's proprietary wrench. The 7075-T6 aluminum receivers maintain standard dimensions, allowing drop-in compatibility with most triggers, bolts, and handguards. You'll need their specific tool for barrel changes, available directly from San Tan for $45.
- Does it fit in a standard rifle case?
- The collapsed 22.5-inch length fits most 26-inch rifle cases with room for optics. I recommend Pelican 1700 series cases, which provide 2.5 inches of foam padding on all sides. The MultiCam Black finish shows minimal wear even after 500+ insertions and removals from tight-fitting cases.
- How long does shipping take after NFA approval?
- Ironclad Armory ships within 3 business days after receiving your approved Form 4, using FedEx 2Day service with adult signature requirement. The entire process typically takes 8-12 months from purchase to delivery, depending on ATF processing times. We include detailed tracking once your paperwork clears.
- Can I return it if it doesn't cycle properly?
- We offer a 30-day function guarantee covering manufacturing defects, but NFA items require special handling. If the rifle fails to cycle with M193 ammunition, we'll cover shipping both ways and complete repairs within 10 business days. Custom builds like the STT-15 require thorough testing with your chosen ammunition before submission.