P7K3 buffer/piston, ask BEFORE you bid
Just a heads up, every P7K3 I've ever bought (bought one) or seen on GB has had a busted buffer/piston making it inoperable/unsafe. If you push it in it stays in - this dramaticaklly reduces the value of the weapon, especially since evn though it is listed on Numrich Gun Parts as a part, the buffer/piston has never (in over five years now) been available. So be sure to ask specifically before you bid. I have asked the last two guys' that are up now (Jan 28, 2008) and both said they would not check it (even after I sent them the info on how/what to check). Buyer BEWARE!
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Can you give the run down here on what we need to check and how to perform the check? 0 -
From website(http://www.hkp7.com/PDF/p7k3-manual.pdf):
The P7K3 has an inertia blow-back action, unlike the gas-retarded action of the P7M8, etc. It uses a hydraulic slide buffer in place of the gas-retarding piston of the larger guns in the family. A gauge is supplied with the gun to see if the little buffer piston is still sticking out far enough. If it isn't, then it is worn out. The piston could be replaced if HK would sell or give you one -- but they typically won't, so the gun is junk at that point. Check this when buying.
Also from HKPRO.com: Other than just making sure the buffer isn't stuck in the compressed position, you could use a small rod to depress the piston on the buffer to make sure it compresses and then springs back into place. How hard it is to compress the buffer varies it seems. My original P7k3 buffer is quite difficult to depress. However, the new buffer I just got and installed in the P7k3 I am trying to sell is somewhat easier to depress.
I have photos of a junk piston if you want e-mail me for them.0
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