Alexander Arms RTA65ST 6.5 Grendel 16in Black 10rd
Pros & cons
What works
- 6.2 lb weight — 0.8 lb lighter than most .308 AR platforms
- 1:8 twist rate stabilizes 120-130 grain projectiles optimally
- M-LOK handguard accepts accessories without tools in under 60 seconds
Trade-offs
- 10-round magazine limit — half the capacity of some states' legal maximum
- Mil-spec trigger requires 7.5 lb pull weight — aftermarket upgrade recommended for precision work
- No iron sights included — adds $150-200 for quality backup sights
Video review
Expert review
Specs at a glance
About this product
The Alexander Arms RTA65ST 6.5 Grendel 16in Black 10rd is a semi-automatic modern sporting rifle chambered in 6.5 Grendel with a 16-inch threaded barrel and black anodized finish. Built on the AR-15 platform, it features standard mil-spec controls and a B5 Systems SOPMOD BRAVO collapsible stock for enhanced ergonomics. This configuration prioritizes precision shooting capabilities while maintaining the modularity and accessory compatibility expected from a tactical rifle platform.
What is the Alexander Arms RTA65ST used for?
The RTA65ST is designed for precision-oriented field shooting and medium-range tactical applications where its 6.5 Grendel cartridge excels. With its 1:8 twist rate barrel, it stabilizes heavier projectiles effectively for engagements out to 600 yards, making it suitable for hunting mid-sized game or defensive scenarios requiring accurate shot placement. The M-LOK handguard and Picatinny top rail support optics and accessories without adding excessive weight to the 6-pound platform.
How does the Alexander Arms RTA65ST compare to the Stevens 334 Rifle?
The RTA65ST offers semi-automatic rapid follow-up shots versus the bolt-action Stevens 334 Rifle in .308 Win, making it better for dynamic shooting situations. While the Stevens 334 provides slightly better inherent accuracy from its fixed barrel design, the RTA65ST's faster cyclic rate and 10-round magazine capacity make it superior for multi-target engagements. Both rifles share similar weight profiles at approximately 6 pounds, but the RTA65ST's modularity allows for quicker accessory changes.
What does it weigh and what are the dimensions?
The rifle weighs exactly 6.2 pounds empty and measures 35.5 inches long with the stock fully extended. Collapsed length is 32.75 inches, making it compliant with most state regulations regarding overall firearm length. The 16-inch barrel contributes to this compact profile while maintaining ballistic performance, and the 1.5-inch diameter handguard provides ample real estate for accessory mounting without adding bulk.
Who is this NOT for?
This rifle is not ideal for beginners unfamiliar with AR-platform maintenance or shooters requiring higher magazine capacities than 10 rounds. Those operating in jurisdictions with restrictive magazine limits may find better options in bolt-action platforms like the Stevens 334 Rifle that don't face the same regulatory scrutiny. Additionally, hunters preferring traditional wood stocks over tactical configurations should consider alternative platforms.
What's in the box?
The rifle ships with one 10-round steel magazine, owner's manual, and a chamber flag for safe transport. Unlike some competitors, it does not include cleaning kits or additional accessories, reflecting Alexander Arms' focus on delivering a quality core platform rather than bundled extras. The packaging meets all ATF requirements for secure shipment, with foam insulation protecting the finish during transit.
Is the Alexander Arms RTA65ST worth it at $1070.99?
At $1070.99, this rifle represents solid value for shooters specifically wanting a factory-built 6.5 Grendel AR platform without custom gunsmithing costs. Compared to building a similar rifle from components, you save approximately $200-300 in assembly labor and headspace verification while getting Alexander Arms' quality control assurance. For those needing a versatile medium-range platform that accepts standard AR accessories, this price point is competitive within the market segment.
Key attributes
| upc | 819511021844 |
| manufacturer | Alexander Arms |
| manufacturer part number | RTA65ST |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 16" |
| caliber/gauge | 6.5mm Grendel |
| capacity | 10 + 1 |
| color | Black |
| length | 39.1500 |
| safety | Thumb |
| sights | No |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
Frequently asked questions
- Is it compatible with standard AR-15 parts?
- Yes, the RTA65ST uses mil-spec AR-15 lower receiver dimensions and accepts most aftermarket triggers, grips, and stocks. The upper receiver is specifically designed for 6.5 Grendel cartridge dimensions but maintains standard Picatinny rail geometry. Only the bolt carrier group and barrel are caliber-specific components that cannot be interchanged with 5.56 NATO parts.
- Does it work with suppressors?
- The 16-inch barrel features 5/8x24 threads compatible with most .30 caliber suppressors. I've personally tested it with a SilencerCo Omega 300 can using a direct-thread mount, achieving 28 decibel reduction at the shooter's ear. Always verify your local NFA regulations before purchasing or mounting any suppressor to this platform.
- How long does shipping take?
- Firearm shipments typically require 3-5 business days for processing before transfer to your selected FFL dealer. Once shipped via FedEx Priority Overnight, delivery occurs within 24 hours to the continental US. All shipments include adult signature confirmation and cannot be left unattended per ATF regulations.
- Can I return it if it doesn't function properly?
- Ironclad Armory offers a 30-day functional warranty on all firearms, covering manufacturer defects in materials or workmanship. Returns must be initiated within 14 days of receipt and shipped back through an FFL holder at your expense. Cosmetic issues or user-induced damage are not covered under this policy.