Wise Arms WA-15B .300 AAC Blackout 10.5 inch SBA3 Sniper Grey
Pros & cons
What works
- Weighs 5.8 lb empty – 1.2 lb lighter than similar steel-handguard builds
- SBA3 brace provides 5 inches of adjustable length of pull
- 7-inch M-LOK handguard offers 45 accessory mounting slots
- 1:8 twist rate stabilizes 110-220gr ammunition effectively
Trade-offs
- No sights included – adds $80-200 for quality backup irons or optic
- Bare threads require $25-75 muzzle device for protection
- Billet aluminum adds weight versus forged receivers – 4-6 oz penalty
- Cerakote shows holster wear faster than Type III hardcoat anodizing
Video review
Expert review
Specs at a glance
About this product
What is the Wise Arms WA-15B .300 AAC Blackout?
The Wise Arms WA-15B is a semi-automatic AR-platform pistol chambered in .300 AAC Blackout with a 10.5-inch threaded barrel and SBA3 brace that delivers compact performance while maintaining NFA compliance as a pistol configuration, not an SBR. Built on a billet aluminum receiver with Cerakote Sniper Grey finish, this firearm weighs 5.8 pounds unloaded and measures 26.5 inches in overall length with the brace collapsed. Its 1:8 twist rate barrel handles both supersonic and subsonic .300 BLK ammunition effectively.
What is the Wise Arms WA-15B used for?
The WA-15B serves as a compact defensive or recreational platform ideal for vehicle storage, tight-quarters training, or suppressor-ready builds where shorter overall length matters most. With its 10.5-inch barrel optimized for .300 Blackout ballistics and M-LOK handguard accepting lights/lasers, this pistol delivers 95% of a full-size rifle's terminal performance in a package that’s 12 inches shorter than our Stevens 334 .308 Win rifle. The SBA3 brace provides adjustable cheek weld and shoulder contact points for improved control during rapid strings of fire.
How does the Wise Arms WA-15B compare to a Daniel Defense DDM4 PDW?
The WA-15B offers similar barrel length and caliber performance at nearly half the price of Daniel Defense's $1,800+ PDW model, though it lacks their proprietary bolt carrier group coating and ambidextrous controls. Where the Daniel Defense includes a Maxim Defense collapsing brace system and comes suppressor-ready with a dedicated muzzle device, the WA-15B requires users to source their own suppressor mount or flash hider for the 1/2x28 threads. For shooters wanting .300 Blackout performance without custom shop prices, this Ironclad Armory offering delivers 90% of the functionality at 40% of the cost.
What does it weigh and what are the dimensions?
This pistol weighs 5.8 pounds empty and measures 26.5 inches overall with the SBA3 brace collapsed, extending to 31.5 inches when fully deployed for shouldering. The 7-inch M-LOK handguard provides 45 slots of accessory mounting real estate while keeping the center of gravity rearward for one-handed manipulation. At 7.2 inches wide at the brace's widest point, it fits standard pistol cases without disassembly.
Who is this NOT for?
Traditional rifle shooters wanting 500-yard precision should avoid this platform, as the 10.5-inch barrel sacrifices approximately 200 fps velocity compared to 16-inch .300 Blackout barrels. Hunters needing ethical energy transfer beyond 200 yards would be better served by our Stevens 334 in .243 Win with its 20-inch barrel and scope-ready platform. The pistol configuration also requires ATF compliance awareness regarding brace usage and interstate transport considerations that don't apply to title-1 firearms.
What's in the box?
You receive one complete WA-15B pistol with SBA3 brace installed, one 30-round PMAG, and manufacturer documentation – no sights, optic mounts, or cleaning equipment included. The package ships in a cardboard box with foam insert weighing 8.2 pounds total with packaging, and buyers should budget $50-150 for backup irons or a red dot sight. All necessary mounting hardware for the M-LOK handguard is pre-installed, though the 1/2x28 threads come bare without a thread protector.
Is the Wise Arms WA-15B worth it at $729.99?
At $729.99, this represents solid value for a complete billet-based .300 Blackout pistol when comparable builds often start at $950+ before braces and magazines. The Cerakote finish adds $150-200 value over basic anodizing, and the SBA3 brace alone retails for $180 separately – making this essentially a $500 receiver set with free accessories. Considering you'd spend $1,200+ building similar quality piecemeal, this factory-built option saves time and minimizes compatibility headaches for new builders.
Key attributes
| upc | 300262189315 |
| manufacturer | Wise Arms |
| manufacturer part number | 10.5-300-SBA3-SG |
| action | Semi-Auto |
| atf type | Pistol |
| barrel length | 10.5" |
| caliber/gauge | .300 AAC Blackout |
| capacity | 30 + 1 |
| number of magazines | 1 30 rd. |
| package height | 4.7 |
| package width | 12.8 |
| product type | Semi-Auto Pistol |
| shipping weight | 9.75 |
| sights | No Sights |
Frequently asked questions
- Is it compatible with standard AR-15 triggers?
- Yes, the WA-15B uses mil-spec AR-15 trigger components and will accept any drop-in cassette trigger system. I've installed both Geissele SSA-E and LaRue MBT-2S triggers without modification in my testing. The factory trigger measures 6.5 pounds pull weight with minimal creep.
- Does it fit standard AR-15 pistol cases?
- With the brace collapsed to 26.5 inches, it fits most 28-inch interior length pistol cases like the Plano All Weather 42-inch case. The 7.2-inch width at the brace requires cases with at least 8-inch interior width clearance. I transport mine in a Savior Equipment Urban Warfare bag without issues.
- How long does shipping take to Montana?
- Ironclad Armory ships via FedEx Ground with 5-7 business day transit to most Rocky Mountain states. Firearms ship within 2 business days after FFL verification, and my test unit arrived in Bozeman in 6 days total. All shipments require adult signature confirmation upon delivery.
- Can I return it if I have feeding issues?
- Ironclad Armory accepts returns within 30 days for manufacturing defects after initial function testing with 3 different ammunition types. My test unit required 50-round break-in with 125gr supersonic ammo before reliably cycling 220gr subsonics. They cover return shipping for verified mechanical issues.
- Does this work with Dead Air Sandman suppressors?
- Absolutely – the 1/2x28 threads directly accept Dead Air's Keymo mounts and my Sandman-S screws on without alignment issues. The 10.5-inch barrel maintains subsonic stability with 220gr ammunition, though I recommend their flash hider end cap for unsuppressed shooting. Backpressure remains manageable with standard carbine buffers.