# Cage NATO Side Arm (ARRI 3/8-16, 135mm)

Cage NATO Side Arm (ARRI 3/8-16, 135mm) attaches to an ARRI 3/8-16 accessory mount and provides an ARRI Rosette adjustable NATO accessory rail with safety pins on each end. 1/4-20 and 3/8-16 with accessory pins also available.

Great for attaching to [Top Plate (Blackmagic URSA Cine LF).](https://www.mid49.com/products/top-plate-blackmagic-ursa-cine-lf "Top Plate (Blackmagic URSA Cine LF)")

This kit consists of individual components: [ARRI 3/8-16 to ARRI Rosette](https://www.mid49.com/products/arri-3-8-16-to-arri-rosette "ARRI 3/8-16 to ARRI Rosette") and [ARRI Rosette to NATO Rail (135mm).](https://www.mid49.com/products/arri-rosette-to-nato-rail-135mm "ARRI Rosette to NATO Rail (135mm)")

**Product Weight:** 3.30oz (96g)  
**Product Dimensions (WxLxH):** 1.26 x 6.14 x 1.16in (32 x 156 x 30mm)

## Details

- **Price:** 139.0 USD
- **Vendor:** MID49
- **Type:** Cage
- **Tags:** side-plate

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 139.00 USD | In stock |

## Images

- Cage NATO Side Arm (ARRI 3/8-16, 135mm)
- Cage NATO Side Arm (ARRI 3/8-16, 135mm)
- Cage NATO Side Arm (ARRI 3/8-16, 135mm)
- Cage NATO Side Arm (ARRI 3/8-16, 135mm)

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> Source: [MID49](https://www.mid49.com/products/cage-nato-side-arm-arri-3-8-16-135mm)
> Updated: 2026-06-22