Description
The HM Defense HM50B2 GEN2 is a purpose-built .50 BMG rifle built for shooters who need precision at extreme distances. This semi-auto comes chambered in .50 BMG with a 29.25-inch match-grade barrel and a 10-round magazine. The aluminum receiver and adjustable HM Precision stock give you a stable platform for consistent long-range work. The rifle ships with a removable monopod mount and a hard case with laser-cut foam for safe transport and storage.
Specifications
| Manufacturer | HM Defense |
|---|---|
| Model | HM50B2 GEN2 |
| Material | Aluminum receiver, steel barrel (per manufacturer specs) |
| Compatibility | .50 BMG ammunition |
| Finish | Black anodized receiver, black nitride barrel (per manufacturer specs) |
| Weight | Approximately 28.5 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Match-Grade Threaded Barrel: The 29.25-inch barrel is threaded for muzzle devices and built to hold tight groups at 1,500+ yards. Why it matters: You get repeatable accuracy shot after shot without barrel whip or heat shift.
- Adjustable HM Precision Stock: The stock adjusts for length of pull and cheek height. Why it matters: You can dial in the fit for your body type, which cuts down fatigue and keeps your eye aligned with the scope.
- Target Trigger: The trigger breaks clean and consistent with minimal creep. Why it matters: A predictable trigger lets you focus on wind calls and target transition instead of fighting the pull.
- Removable Monopod Mount: The included monopod mount attaches to the stock for rear support. Why it matters: You can set up quickly on uneven ground without carrying extra gear.
- 10-Round Magazine: The rifle comes with one 10-round magazine. Why it matters: You get more shots between reloads compared to single-shot .50 BMG rifles, which matters when you’re working a target at distance.
Who It’s For
This rifle is for shooters who need a semi-auto .50 BMG for long-range target shooting, competition, or precision practice. It suits experienced marksmen who want a reliable platform that can hold up to heavy use. New shooters should get training before handling this rifle due to its recoil and weight.
Pros and Cons
- Pros: Match-grade barrel for accuracy; adjustable stock for fit; semi-auto action for faster follow-up shots; includes monopod and hard case.
- Cons: Heavy at 28.5 lbs, which makes it less portable than bolt-action .50s; price point is high compared to some single-shot options.
Comparison
| Feature | HM Defense HM50B2 GEN2 | Zev Technologies OZ9 | Agency Arms AOS G19 |
|---|---|---|---|
| Caliber | .50 BMG | 9mm | 9mm |
| Action | Semi-auto | Semi-auto | Semi-auto |
| Barrel Length | 29.25 inches | 4.49 inches | 4.02 inches |
| Magazine Capacity | 10 rounds | 17 rounds | 15 rounds |
| Weight | 28.5 lbs | 1.5 lbs | 1.3 lbs |
| Price | $5,244.03 | $1,200 | $900 |
| Best For | Long-range precision | Duty/competition | Concealed carry |
FAQ
What is the barrel twist rate?
The barrel has a 1:15 twist rate per HM Defense specs, which stabilizes standard .50 BMG projectiles well at long range.
Does the rifle come with a scope?
No, the rifle does not include a scope. It ships with a 20 MOA rail for mounting your own optics.
Can I use this rifle for competition?
Yes, the HM50B2 GEN2 is suitable for long-range precision competitions like King of 2 Miles or PRS-style matches where .50 BMG is allowed.
What type of hard case is included?
The rifle ships in a hard case with laser-cut foam that fits the rifle and magazine. You can customize the foam for additional accessories.
Is the barrel threaded for a suppressor?
Yes, the barrel is threaded 1-14×20 TPI, which is common for .50 BMG muzzle brakes and suppressors.
Ready to Order
This HM Defense HM50B2 GEN2 .50 BMG rifle is in stock and ready to ship. Browse more Semi Auto Rifles or check out our Long Range Rifles and Rifle Accessories.
- ✅ Nationwide delivery (all 50 states)
- ✅ Ships 1-2 business days
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Last updated: April 2026
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