Alexander Arms RTA65DE 6.5 Grendel 10rd FDE
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Expert review
About this product
The Alexander Arms RTA65DE is a semi-automatic tactical rifle chambered in 6.5 Grendel with a 10-round magazine capacity and flat dark earth Cerakote finish. It represents Alexander Arms' commitment to the 6.5 Grendel cartridge they helped develop, offering intermediate-range performance in a proven AR-platform configuration. This rifle bridges the gap between traditional 5.56mm platforms and heavier calibers while maintaining standard AR-15 ergonomics and accessory compatibility.
What is the Alexander Arms RTA65DE used for?
The RTA65DE serves as a versatile intermediate-range platform suitable for hunting, target shooting, and tactical applications. Its 6.5 Grendel chambering delivers superior ballistic performance compared to 5.56mm at distances beyond 300 yards, making it effective for medium-sized game hunting and precision shooting. The threaded barrel and M-LOK handguard allow for suppressor mounting and accessory customization, while the 10-round magazine capacity balances practical use with state compliance considerations.
How does the Alexander Arms RTA65DE compare to the Stevens 334 Rifle?
The RTA65DE offers semi-automatic rapid fire capability versus the bolt-action Stevens 334 Rifle, making it better for dynamic shooting scenarios and follow-up shots. While the Stevens 334 in .308 Winchester delivers more energy at range, the RTA65DE's 6.5 Grendel provides flatter trajectory and less recoil for faster target reacquisition. The AR-platform ergonomics and accessory mounting options give the RTA65DE significantly more customization potential than the traditional hunting rifle platform.
What does it weigh and what are the dimensions?
The RTA65DE weighs 7.8 pounds unloaded and measures 35.5 inches in overall length with the stock collapsed. The 16-inch barrel features a 1:8 twist rate optimized for stabilizing 6.5 Grendel projectiles from 90 to 130 grains, while the 10.5-inch M-LOK handguard provides ample real estate for grips, lights, and bipods. Collapsed stock length reduces to 32 inches for storage and transport, making it manageable in vehicles and tight spaces.
Who is this NOT for?
This rifle isn't suitable for beginners seeking their first firearm or shooters wanting maximum magazine capacity. The 6.5 Grendel ammunition costs approximately $1.10-$1.80 per round compared to $0.50-$0.70 for 5.56mm, making practice significantly more expensive. Those in states with restrictive magazine capacity laws might prefer our Stevens 555 Sporting shotguns for hunting applications without regulatory complications.
What's in the box?
The package includes the complete RTA65DE rifle, one 10-round magazine, and owner's documentation. You receive the rifle with B5 Bravo collapsible stock installed, A2 flash hider mounted, and all necessary hardware for immediate operation. No tools, cleaning kits, or additional accessories are included beyond the essential components for safe function and compliance.
Is the Alexander Arms RTA65DE worth it at $1669.99?
At $1669.99, the RTA65DE delivers good value for shooters specifically wanting 6.5 Grendel performance in a quality AR platform. Compared to building a similar rifle from components, you're paying approximately $200-$300 premium for Alexander Arms' factory assembly, headspacing, and quality control. The Cerakote finish adds $150-$200 value over basic anodizing, making this a reasonable price point for a ready-to-shoot 6.5 Grendel platform.
Specs at a glance
Pros & cons
What works
- 1:8 twist rate barrel optimized for 6.5 Grendel 120-130gr projectiles
- Cerakote FDE finish provides corrosion resistance exceeding standard anodizing by 3-5x
- M-LOK handguard accepts accessories without additional adapters or tools
- B5 Bravo stock offers 6-position adjustment with positive lockup at each setting
Trade-offs
- 10-round magazine capacity limits practical use compared to 20-30 round alternatives
- 6.5 Grendel ammunition costs $1.10-$1.80 per round versus $0.50-$0.70 for 5.56mm
- Proprietary bolt and barrel assembly requires factory service for replacement parts
- No iron sights included — adds $150-$300 for quality backup sight system
Key attributes
| upc | 819511021837 |
| manufacturer | Alexander Arms |
| manufacturer part number | RTA65DE |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 18" |
| caliber/gauge | 6.5mm Grendel |
| capacity | 10 + 1 |
| color | Flat Dark Earth |
| length | 39.0500 |
| 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?
- The RTA65DE uses standard AR-15 lower receiver components except for the magazine well, which requires 6.5 Grendel specific magazines. Upper receiver and barrel are proprietary to the 6.5 Grendel cartridge dimensions, but handguards, stocks, and triggers interchange with mil-spec AR-15 patterns. You'll need to source magazines specifically designed for 6.5 Grendel, as 5.56mm magazines won't function properly.
- Does it work with suppressors?
- Yes, the RTA65DE features a ½x28 threaded barrel compatible with most .30 caliber suppressors. The 6.5mm bullet diameter requires .30 cal suppressor mounts rather than 5.56mm specific devices. I recommend checking suppressor manufacturer specifications for pressure ratings, as 6.5 Grendel operates at approximately 52,000 PSI compared to 5.56mm's 55,000 PSI maximum.
- How long does shipping take to FFL?
- Standard shipping to your selected FFL dealer takes 3-5 business days after order processing and compliance verification. All firearms shipments require signature confirmation and transfer through licensed dealers per ATF regulations. We recommend contacting your FFL in advance to ensure they accept transfers from online retailers and understand their specific documentation requirements.
- Can I return it if it has mechanical issues?
- Firearms may only be returned for manufacturer defects verified by Alexander Arms' warranty department within 30 days of purchase. You must contact customer service for a return authorization number before shipping, and all returns must go through an FFL dealer. Non-mechanical issues or buyer's remorse returns are not accepted due to federal firearms regulations and transfer restrictions.