User Panel
User Panel
User Panel
FL, USA
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Posted: 3/15/2024 4:48:26 PM EDT
Does anyone have C/P how to? or a link to one for MP5/k lower I have a mill and all tooling required. I have an extra and would like to try this.
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Posted: 3/15/2024 6:13:12 PM EDT
[#1]
As long as you have a receiver with a semi-auto shelf, this is what I've always done. Just measure the width of the shelf with calipers or mics, then measure the space between the existing ears. Subtract the space between the ears from the width of the shelf, and divide by two. That is how much has to come off of each ear. Trim an extra .005 off of each side for a little clearance. So let's say the shelf is .870 wide and the ears are .760 wide. That's a difference of .110, half of which is .055, plus .005 for clearance. So you need to cut .060 out of the inside of each ear. These numbers aren't actual, just an example. You don't need to trim the inside of the entire ear off, just the part that runs along the sides of the shelf. Then you'll need to open the slot up taller and wider as well to fit over the shelf. You can get the correct dimension by measuring from the receiver to the top of the shelf and making the slot in the grip just a few thousandths higher than that. The "pinning" is the simple part - just cut the ends of of the push0pin and epoxy them to the ears. |
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Posted: 3/15/2024 6:17:48 PM EDT
[Last Edit: chargerdude70]
[#2]
Edit: Osprey beat me to it.
Measure ears, write down dimension. Measure shelf, write down dimension. Subtract both answers and divide by 2, write down dimension. This is what needs to be removed from the housing to fit the shelf width wise. If milling, you can divide that in half, touch off the inside of ear and mill that much off each ear. I’d add a couple thou’s for slip fit. Once the housing slips on and can touch the shelf, you can blue the shelf and smack the back of housing to get witness marks the see what metal need to be removed to fit the shelf. The pin can be JB welded in prior or after this I suppose. Never asked how the “Pro’s” do it. I do all this with a file and Dremel. I file one ear at a time and fit, then blue mark pin to cut down. Then rough up pin and JB weld in place and do finish file to fit. Hope this helps. |
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FL, USA
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Posted: 3/16/2024 8:09:18 AM EDT
[#3]
Thank you guys very much. I believe Hk pro glues the pin in first the uses an end mill for the whole process. As the one that I have seen looked like all of the machining matched like the pin was in when it was milled
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