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?
Thanks in advance!