Been A LOT of workbench posts lately, but maintaining and completing projects necessitates that.
The Gemtech Integra upper has shown some signs of being under-sprung. If that’s what you call having too lite of a buffer in it? I say that since when it comes to AR’s, I don’t build them. I don’t modify them. I shoot them. Keeps the BS to a minimum. Read that as, my gun works while a lot of the home builds don’t.
Years and years of seeing hobby & craft guns go down has really calcified my opinion on the matter. But I digress.
The Integra was bought as an upper, so we have to mate it to a lower. And while the upper is 16” long, the barrel is just 10.5”, with the rest being baffles & expansion chamber.
As many of you AR-pistol guys already know, a 10.5” pistol usually benefits from an H2 or sometimes H3 buffer. Also being integrally suppressed, the buffer spring noise is VERY noticeable when shooting. So after some research, I stumbled on the Geissele Super 42 setup. It has a triple-wire spring that dampens the noisy vibrations with whatever buffer weight the user wants (H2).
So…here we are. Me tweaking the action speed of an AR rifle. Which low-key still makes me want to barf. When the summer is over, maybe I’ll swing back through with some opinions and observations on how it all worked.
Sincerely,
Marky
www.John1911.com
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