SmallRig Action 5 Pro Action 4 Action 3 Camera Cage
Quick take
The SmallRig 4119C is a camera cage designed specifically for DJI Osmo Action 5 Pro, Action 4, and Action 3, prioritizing protection while keeping access to buttons, touchscreen, and key openings for battery and media swaps. It also adds practical creator mounting options like a cold shoe and multiple 1/4-20 points, and it supports attaching a DJI Mic via the left-side mount. The main limitation is that it is not meant for underwater use.
Pros and cons
Pros
- Tailor-made fit for DJI Osmo Action 5 Pro, Action 4, and Action 3, with full access to buttons and touchscreen.
- Quick-locking style cage design that keeps charging, battery, and microSD access without removing the camera.
- Extra mounting flexibility: top cold shoe plus anti-twist 1/4-20 threads on three sides.
- Works with DJI Mic setups via a left-side attachment approach, supporting horizontal and vertical shooting modes.
Cons
- Not designed for underwater photography.
- Magnetic adapter attachment can be fiddly if you rely heavily on switching and alignment (some buyers note difficulty).
- It is a cage accessory, so you will still be adding a protective frame weight and bulk versus using the action camera bare.
What buyers think
Buyer-review evidence points to strong satisfaction with how snugly the cage fits and how practical the added mounting points are for action and tripod setups. Multiple reviews emphasize durability and improved day-to-day usability versus stock DJI plastic protection, particularly around access to the screen, charging, and swapping batteries or memory cards without taking the camera out. There are also recurring mentions of the cage being user-friendly, with locks that feel secure and doors designed for easier insertion and removal. Overall, the review themes align with a protective cage that is built for creators who frequently mount accessories and need fast, repeatable operation.
Who this cage is for
This is a good match if you shoot with a DJI Osmo Action 5 Pro, Action 4, or Action 3 and want more than a basic protective shell. The cage is especially appealing to users who:
- Use tripods, handheld rigs, or third-party mounting gear (it provides a cold shoe and 1/4-20 threads).
- Want easy battery and microSD access during longer shoots.
- Plan to mount a DJI Mic (left-side attachment design) for vlogging or run-and-gun audio setup.
- Care about screen protection compatibility while still using the cage.
What you get, fit, and access
The SmallRig cage is built as a protective frame for the DJI Osmo Action 5 Pro / Action 4 / Action 3. It uses a combination of aluminum alloy and silicone (silicone appears intended as protective coverage in contact areas). Review themes consistently mention a snug, secure fit and a “ready” feel for rugged use.
From a usability standpoint, the cage is designed to preserve access to key functions. You can still reach buttons and the touchscreen, and you can swap the battery from the right side without removing the camera from the cage. The cage also supports access for charging and the microSD/battery area, which matters for action creators who do frequent stop-and-go filming.
Mounting and expansion options that matter in the field
One of the biggest reasons to choose a cage over a simpler housing is modular accessory support, and this model leans into that.
- Cold shoe mount on top for compatible lights, microphones, or action accessories that use a shoe interface.
- 1/4-20 thread points on three sides for tripods and a wide range of third-party mounting hardware.
- Magnetic quick-release compatibility using the bottom and right magnetic mount approach, designed to work with the original magnetic quick-release adapter for DJI and the SmallRig Magnetic Adapter Mount 3662 for quick horizontal and vertical setups.
If you already own a drawer of mounts, this is the kind of cage that can reduce adapter swapping and help keep your setup compact and repeatable.
Pros and cons, in plain terms
Pros
- Good protection without blocking core camera controls, screen use, and battery/media access.
- Adds meaningful accessory real estate via cold shoe and 1/4-20 mounting points.
- Designed to accommodate DJI Mic attachment on the left side, useful for vlogging and creator rigs.
- Lightweight for its purpose, listed at about 93 grams.
Cons
- Not suitable for underwater shooting.
- Magnetic adapter attachment may require patience depending on your exact switching routine and alignment needs.
- It adds a protective frame, so it will not feel as minimal as using the camera uncovered.
Alternatives to consider (by buyer priority)
If you are deciding between cage styles, here are practical ways to narrow alternatives without getting lost in model numbers:
- If you need underwater capability: prioritize an underwater housing instead of a dry-land action cage, since this one is explicitly not designed for underwater photography.
- If you want the simplest protection: look for housings that minimize extra mounting hardware, but you may give up cold shoe and 1/4-20 expansion.
- If you rely on magnetic quick-release switching: choose a cage designed for your specific DJI magnetic adapter workflow so insertion and alignment stay consistent.
Verdict
The SmallRig Action 5 Pro / Action 4 / Action 3 Camera Cage 4119C is a practical upgrade for action camera owners who want rugged protection plus real creator mounting flexibility. It keeps screen and button access front and center, supports fast battery and microSD swaps from the cage, and adds cold shoe and 1/4-20 points for tripods and accessories. Choose it if your setup is focused on outdoor action and creator rigs, and skip it if you need underwater shooting.
FAQ
Is this cage compatible with DJI Osmo Action 5 Pro, Action 4, and Action 3?
Yes. It is designed specifically for DJI Osmo Action 5 Pro, Action 4, and Action 3.
Can I access the screen and buttons while the camera is inside?
Yes. The cage is built to provide full access to buttons and touchscreen use.
Can I change batteries without removing the camera from the cage?
Yes. The design supports battery access from the right side without removing the camera.
Does it work with a DJI Mic setup?
It supports attaching a DJI Mic on the left side of the cage.
Is the cage waterproof or safe for underwater use?
No. It is not designed for underwater photography.
Specifications
| Product Title | SmallRig Action 5 Pro Action 4 Action 3 Camera Cage for DJI, Protective Cage Compatible for DJI Mic, Protective Frame for Osmo Action 5 Pro Action 4 Action 3-4119C |
|---|---|
| Category | Electronics > Camera & Photo > Bags & Cases > Camcorder Cases |
| Brand | SMALLRIG |
| Manufacturer | SMALLRIG |
| Model Name | 4119B |
| Model Number | 4119C |
| Video Capture Resolution | 4K (3840 x 2160) |
| Color | Black |
| Item Weight | 93 Grams |
| Product Dimensions | 1.37"D x 1.37"W x 2.3"H |
| Manufacturer Part Number | 4119-SR |
| Built-In Media | 1 x Cage |
| Warranty Description | 2-Year Warranty (1-Year for Electronic Products) |
| Maximum Weight Recommendation | 93 Grams |
| Item Dimensions D x W x H | 1.37"D x 1.37"W x 2.3"H |
| Folded Size | 81.3 x 34.8 x 58.4mm |
| Compatible Devices | for DJI Action 5 Pro, Action 4, Action 3 |
| Video Capture Format | MP4 |
| Audio Recording | No |
| Shooting Modes | horizontal, vertical |
| Exposure Control Type | Automatic |
| Water Resistance Level | Not Water Resistant |
| File Format | MP4 |
| Media Type | video |
| Compatible Camcorder Models | dJI Osmo Action 3, dJI Osmo Action 4, dJI Osmo Action 5 Pro |
| Number of Items | 1 |
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