> For the complete documentation index, see [llms.txt](https://docs.wcproducts.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wcproducts.com/welcome/shop-accessories/2026-field-elements/assembly-instructions/trench.md).

# Trench

{% hint style="warning" %}
Rivets are not included with the Bump.

3/16" rivets with a .250"–.438" grip length ([WCP-0450](https://wcproducts.com/products/rivets)) are required for the assembly steps below.
{% endhint %}

## Step 1

Mount the Riser Inside Body to the Riser Bottom using 3/16" rivets.

<figure><img src="/files/UqhZnPbogIcY2nGqiRcz" alt=""><figcaption></figcaption></figure>

## Step 2

Slide the Fixed Riser Outside Body onto the Assembly from Step 1 and secure using 3/16" rivets.

<figure><img src="/files/6PUEpAEXscRlWje1GQUt" alt=""><figcaption></figcaption></figure>

## Step 3

Mount the Outside Skirt onto the assembly from Step 2 using 1/4"-20 x 3/4"L bolts and nuts.

<figure><img src="/files/5xJMtCSbyWz1mNTEVxIk" alt=""><figcaption></figcaption></figure>

## Step 4

Mount the Side Skirts onto the assembly from Step 3 using 3/16" Rivets.

<figure><img src="/files/AWCsSzRDnmQvJ60STKDT" alt=""><figcaption></figcaption></figure>

## Step 5

Mount the Inside Skirt onto the assembly from Step 4 using 1/4"-20 x 3/4"L bolts and nuts.&#x20;

3/16" Rivets need to be added in the Rivet Locations marked below.

<figure><img src="/files/rOTWJcluzGAGXbMDL6eM" alt=""><figcaption></figcaption></figure>

## Step 6

Mount the Fixed Arm to the Assembly from Step 5 using 3/16" Rivets.

<figure><img src="/files/HT1V5CqNT8gm0szAvChq" alt=""><figcaption></figcaption></figure>

## Step 7

Mount the April Tag Mounts to the Fixed Arm from Step 6 using 3/16" rivets.

<figure><img src="/files/xA5Testi6cwijcCi8pz1" alt=""><figcaption></figcaption></figure>


---

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