Description
The 10mm Auto has been having a well-earned comeback, and the Stribog SP10A3 is one of the best homes for it. Grand Power took their Slovak-built Stribog, the same platform that earned a reputation as one of the most reliable pistol caliber guns on the market, and chambered it for a round that delivers near .357 Magnum energy from a rimless, high-capacity cartridge. The secret sauce is the roller-delayed blowback system. Instead of relying on a heavy bolt slamming back and forth, the rollers meter out the recoil impulse, and the difference on the range is real. Full-power 10mm loads feel closer to a 9mm subgun than a big bore, and the dot settles back on target fast.
What the SP10A3 Brings to the Table
The 8 inch button-rifled barrel comes threaded 9/16×24 with a thread protector, so adding a muzzle device or can is a five minute job. Up top you get a full-length Picatinny rail with flip-up iron sights installed from the factory, plus a bottom rail and M-LOK slots at 3 and 9 o'clock for lights and lasers. The charging handle is non-reciprocating, swaps sides without tools, and the safety and controls are fully ambidextrous. Grand Power built this one around the AR-15 trigger pattern too, which opens the door to a huge aftermarket of drop-in upgrades. Feeding comes from durable 20 round polymer magazines in the proven UMP pattern, and the straight-wall 10mm cartridge runs beautifully in a straight magazine.
A 10mm Stribog That Earns Its Keep
With an aluminum upper, polymer lower, and QD sling sockets, the SP10A3 is a compact, tough package that works as a range gun, truck gun, or suppressor host. It ships with three 20 round magazines and a hard case, so you're set for a full range day right out of the box. If you've been waiting for a pistol caliber platform with real thump behind it, this is the one to handle.
Key Specifications
- Model: Stribog SP10A3
- Manufacturer Part Number: GRP810091157152
- UPC: 810091157152
- Caliber: 10mm Auto
- Action: Semi-Auto, Roller-Delayed Blowback
- Barrel Length: 8", Threaded 9/16×24 with Thread Protector
- Capacity: 20+1
- Magazine Type: UMP-Pattern Polymer, 20rd
- Overall Length: 19.3"
- Sights: Flip-Up Iron Sights
- Charging Handle: Non-Reciprocating, Reversible
- Trigger: Mil-Spec AR-Pattern
- Upper Receiver: Aluminum, Hardcoat Anodized
- Lower Receiver: Polymer
- Safety: Ambidextrous Manual Safety
- Finish: Matte Black
What’s Included
- Grand Power Stribog SP10A3 10mm pistol
- Three 20-round polymer magazines
- Flip-up iron sights (factory installed)
- Thread protector (installed)
- Hard plastic case
Frequently Asked Questions
How does the Stribog SP10A3 handle full-power 10mm recoil?
Surprisingly well. The roller-delayed blowback action spreads the recoil impulse out instead of letting a heavy bolt slap you around, so felt recoil lands much closer to a 9mm subgun than you'd expect from 10mm. Follow-up shots come quick, and your optic stays on target.
What magazines does the SP10A3 use?
It feeds from durable 20-round polymer magazines built on the proven UMP pattern, and three come in the box. Because 10mm is a straight-wall cartridge, it runs great in a straight magazine, and spares are easy to find.
Can I put a suppressor on the Stribog SP10A3?
Yes, and it makes an excellent host. The 8 inch barrel is threaded 9/16×24 and ships with a thread protector, so most 10mm and .45 caliber cans thread right on with the correct mount. The compact overall length means it stays handy even with a suppressor attached.
Does the SP10A3 accept AR-15 triggers?
It does. Grand Power designed this generation around the AR-15 trigger pattern, so a Mil-Spec style trigger comes installed and you can swap in aftermarket AR triggers if you want a lighter or crisper pull. That gives you a huge upgrade path down the road.


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