Description
The SB Tactical SBT5-22 is the brace HK MP5 .22LR owners keep asking for. It swaps the factory end cap for a molded polymer unit that adds a stabilizing point of contact, so your rimfire MP5 handles noticeably better without changing the character of the gun. Everything ships as a complete, ready-to-install assembly, which means you're not hunting down extra adapters or hardware to get it running.
What Sets the SBT5-22 Apart
The standout feature here is the integral side-folding mechanism. Fold it flat against the receiver when you want a compact footprint for storage or transport, then flip it back out when it's time to shoot. The polymer end cap also includes a QD socket, so adding a sling is quick and clean. An adjustable nylon strap is part of the package too, letting you snug the brace to your forearm for steadier control during rimfire plinking sessions.
Fitment on the SBT5-22
This is the part worth reading twice. The SBT5-22 is built specifically for the HK and Umarex MP5 .22LR platform and will not fit a 9mm MP5. If you're running the rimfire version of the MP5, you're in the right place. The brace uses the correct .22LR adapter, so it mates up the way it should without forcing anything.
Built to Last and Made in the USA
SB Tactical is a name people trust in this space, and the SBT5-22 carries that reputation. It's US veteran designed and proudly made in the USA, with the kind of rugged polymer construction that holds up to regular range time. Folks who've installed it point out how much better the little MP5 handles and how straightforward the install is. If you want your .22LR MP5 to feel more planted and shoot a touch tighter, this is a simple, effective swap that pays off every time you pick it up.
Key Specifications
- Manufacturer: SB Tactical
- Model: SBT5-22
- Manufacturer Part Number: SBT522-01-SB
- UPC: 699618783568
- Fits: HK / Umarex MP5 .22LR
- Type: Side Folding Stabilizing Brace
- Color: Black
- Material: Molded Polymer
- Folding Mechanism: Integral Side-Folding
- Attachment: QD Socket End Cap
- Installed Length: 11.25 in
- Origin: Made in the USA
- Shipping Weight: 1.025 lbs
What’s Included
- Complete SBT5-22 brace assembly
- HK MP5 .22LR end cap adapter
- Adjustable nylon stabilizing strap
Frequently Asked Questions
Will the SBT5-22 fit a 9mm HK MP5?
No, the SBT5-22 is designed specifically for the HK and Umarex MP5 chambered in .22LR. It will not fit the 9mm MP5 platform at all. If you own the rimfire version of the gun, this is the correct brace for it.
Is the SBT5-22 hard to install?
Not at all. It ships as a complete, ready-to-install assembly, so you're essentially swapping the factory end cap for the brace unit. Most owners have it done in just a few minutes with basic tools.
Does the SBT5-22 fold to one side?
Yes, it uses an integral side-folding mechanism that lets the brace fold flat against the receiver. That keeps the overall package compact for storage and transport, and it flips back out quickly when you're ready to shoot.
Can I attach a sling to the SBT5-22?
You can. The molded polymer end cap includes a QD socket, so a quick-detach sling swivel snaps right in. It also comes with an adjustable nylon strap for stabilizing the brace on your forearm.





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