Thanks Guys,

'preciate the thoughts. I know Griffin & Howe websight and have seen their instruction sheet. I wanted to see what the Military Manuals said in case it adds some clarity to the process. So, special thanks to you J Gaynor, the website you listed had the Ordnance Manual which I bought and read.Their reference to drilling the case hardened receiver with a high speed steel drill isn't one I'll follow. Based on my toolmaker experience I will use carbide drills and I'll also use a nitrided tap for the screw holes.

Thanks again to you all for your suggestions.

Stockerphil