SmallRig Hawklock Quick Release Cage 5187 for Sony Alpha 1 II / Alpha 9 III

What this cage is for

If you shoot with a Sony Alpha 1 II or Alpha 9 III and you’re constantly adding accessories, a full cage can make your rig feel far more “thought through” than mounting bits directly onto the camera. The SmallRig Hawklock Quick Release Cage (model 5187) is built for exactly that: it gives you an accessory mounting framework, adds protection around the body, and makes it easier to move between handheld, stabiliser, and tripod setups.

On paper, it’s one of those cages that tries to tick the everyday boxes: protect the camera, keep your mounting points usable, and improve how quickly you assemble and disassemble the rig. It’s also designed around SmallRig’s HawkLock quick release approach, which is the bit that most people will care about once they’ve got used to swapping rigs.

Quick release system: the practical advantage

The standout idea here is the built-in quick release system that pairs with HawkLock quick release. The cage uses a one-button self-locking mechanism with smooth sliding, with the intention of making setup and teardown more efficient (and less fiddly) when you’re changing shooting scenarios.

There’s also a built-in quick release plate intended for Arca-style compatibility. That matters if you use Arca clamps or like the idea of jumping between handheld, gimbal, and tripod without reconfiguring everything from scratch.

That said, it’s still a cage. If you only shoot occasionally and you’re happy keeping accessories minimal, you may find the extra bulk and rigging steps don’t feel worth it. This is the sort of accessory you’ll “earn back” through repeated use.

Where it supports you (and where it’s not perfect)

The cage is designed to lock the camera at three points: through the 1/4\"-20 screws on both sides and the M4 positioning column at the bottom. The company also notes a protective silicone gasket around the camera body area to help prevent scratches.

Another comfort-and-control angle is the grip and battery-compartment area. The design includes an opening and closing wrench approach that’s meant to match the body’s curve better, add support for the little finger, and help with longer shooting sessions where your hand position matters.

A limitation to keep in mind: the cage is built for this specific Sony line, and the usefulness depends on whether you’re the kind of shooter who will actually use the extra mounting points. If you don’t plan to add handles, microphones, lights, or straps, you may be paying for features you won’t use.

Key mounting options for expanding your rig

If your camera rig is never “done”, this is where the 5187 looks sensible. It includes multiple installation points, including 1/4\"-20 locating holes, 3/8\"-16 locating holes for ARRI and HawkLock H21 NATO rail, plus cold shoe mounts and additional 1/4\"-20 threaded holes.

The idea is straightforward: you get more ways to attach accessories without hunting for adapters every time. The cage also references a HawkLock H21 NATO rail and multiple mounting-related elements such as cold shoe positions.

There are also notes about built-in QD-related compatibility: a built-in QD hole intended for a QD shoulder strap, plus reserved holes on both sides and the bottom for accessory items such as wrist straps and shoulder straps.

One micro example of how this could play out in real life: imagine you’re shooting a short interview. You can set the camera on a tripod, use the quick release plate to mount for stability, then later swap back to handheld with a strap and a mounted mic setup—without fully rebuilding the rig from scratch.

Technical overview (the bits to check before buying)

Tech specs

• Type: Quick release camera cage with accessory expansion interface
• Designed for: Sony Alpha 1 II / Alpha 9 III
• Locking points: three-point locking via 1/4\"-20 screws on both sides and an M4 positioning column at the bottom
• Protection: built-in all-round protective silicone gasket to help prevent scratches
• Quick release: designed to work with HawkLock quick release, includes a built-in quick release plate for Arca-style setups
• Arca/tripod gimbal compatibility (as stated): compatible with Arca-style tripod setups, references DJI RS 2 / RSC 2 / RS 3 / RS 3 Pro / RS 4 / RS 4 Pro stabilisers
• Mounting points mentioned: 1/4\"-20 locating holes, 3/8\"-16 locating holes for ARRI/HawkLock H21 NATO rail, cold shoe mounts, and additional 1/4\"-20 threaded holes
• Strap attachment (as stated): built-in QD hole compatible with a QD shoulder strap, holes reserved on sides and bottom for wrist/shoulder strap accessories
• Disassembly aid: built-in magnetic wrench for easier assembly/disassembly

Pros

• Quick release concept should speed up moving between handheld, stabiliser, and tripod workflows.
• Multiple installation points make it easier to expand your rig over time.
• Built-in protective silicone gasket is aimed at reducing the chance of scuffs/scratches.
• The battery-compartment area design is meant to improve comfort and hand support.

What to watch out for

• It’s a cage for a specific camera line, so if you’re not committed to using the Sony Alpha 1 II / Alpha 9 III platform, it won’t be a general-purpose buy.
• If you only use a couple of accessories and never swap shooting setups, the quick release and expansion hardware may feel like more hassle (and bulk) than you need.

In the box / included items

The product description highlights a built-in magnetic wrench for easier disassembly and assembly. Beyond that, it mainly focuses on the cage itself and the quick release and mounting approach.

When it makes sense

It makes sense if you already run accessories and want one rig architecture that can handle different shooting scenes—especially if you value quick changes between stabiliser, tripod, and handheld. It also suits shooters who like having a cage layout that makes mounting more “repeatable”, rather than relying on ad-hoc attachments.

When it might not suit you

You may want to skip it if your setup is minimal, you’re not planning to mount microphones/lights/handles/straps, or you rarely change between tripod and stabiliser workflows. In those cases, a simpler mounting approach could be more cost-effective and less bulky.

Final verdict

Final verdict

The SmallRig Hawklock Quick Release Cage 5187 is a strong fit if you’re building a modular Sony Alpha 1 II / Alpha 9 III rig and you want faster swaps thanks to the HawkLock quick release concept plus an Arca-style quick release plate. It’s more of an “investment” for people who actually use mounting points regularly.

It may not be the best choice if your camera accessories stay limited or if you don’t see yourself switching between handheld, stabiliser, and tripod often—because then the cage’s extra hardware is unlikely to justify its added complexity.

Mini FAQ

Mini FAQ

Is this cage only for the Alpha 1 II and Alpha 9 III? Yes, it’s explicitly designed for Sony Alpha 1 II / Alpha 9 III.

What’s the point of the HawkLock quick release here? The description focuses on one-button self-locking and smoother sliding to improve assembly and disassembly efficiency when switching between shooting setups.

Does it support Arca-style setups? It includes a built-in quick release plate for Arca, intended for tripod compatibility.

Can I attach accessories beyond basic mounting? The cage includes multiple installation points such as 1/4\"-20 and 3/8\"-16 locating holes, cold shoe mounts, and other threaded holes, which should help with expansion.

Is there any protection for the camera body? Yes, there’s an all-round protective silicone gasket mentioned to help prevent scratches.