Words: Rich Norman

One of the good things about a receiver made of 7075 aluminium is that you can hit it really fucking hard with a hammer.

OK, you can hit any replica receiver that hard – it’s true. But with 7075 it’s consequence free …relatively.

One of the positive consequences is that – just like the RS L119A2 – you are able to ‘stake’ components.

What is staking? I did my best to explain it in my blog about genuine Colt Canada parts:

Staking is a process by which an interference fit is created between two components, with a whack from a hammer. Material is displaced by the blow – normally via a centre punch. The displaced material creates a tongue which intersects with a notch on the item being staked, thus keeping the two components captive.

I want to stake the HAO L119A2 IUR’s steel charging handle latch notch.

That’s quite a mouthful, so here’s a pic of an RS IUR (source unknown), showing the area I’m talking about. I’ve highlighted the impact (staking) points:

Originally I used JB Weld to secure this item on my HAO IUR, but after receiving guidance on centre punches from L119 Owners Club regular Andy J (thanks again mate!) I’m ready to get staking.

True, it appears that Colt Canada has used a punch with a square cross-section. This has been verified by a trusted contact, who has a professional background in the Canadian firearms industry.

So, I need to figure out how I can make these marks.

I’m thinking Colt Canada uses a proprietary tool (as does Andy J, who is an expert in engineering matters), but does anyone have any ideas?

You can contact me through the usual channels, including my IG profile or the contact form on the blog.

Thanks in advance!