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Posted: 4/23/2024 3:09:55 AM EDT
[#1]
Quote HistoryOriginally Posted By yamahawarrior89: The stock valve I have is a revised 3 position version, purchased the gun new in the end of May 2023. The intermediate piston is vented with two .138" holes as well. The fit between the piston and the adjuster is tighter on the stock on compared to the kns. The port sizes are as follows: .055" .067" .071" https://www.ar15.com/media/mediaFiles/372855/IMG_20240331_114537390_compress86_jpg-3174590.JPG https://www.ar15.com/media/mediaFiles/372855/IMG_20240331_114600013_compress41_jpg-3174589.JPG Holes in the base of the piston aren’t vents. They have no interaction with gas |
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Posted: 4/23/2024 12:53:12 PM EDT
[#2]
Quote HistoryOriginally Posted By BisonWorld: Holes in the base of the piston aren’t vents. They have no interaction with gas Quote HistoryOriginally Posted By BisonWorld: Originally Posted By yamahawarrior89: The stock valve I have is a revised 3 position version, purchased the gun new in the end of May 2023. The intermediate piston is vented with two .138" holes as well. The fit between the piston and the adjuster is tighter on the stock on compared to the kns. The port sizes are as follows: .055" .067" .071" https://www.ar15.com/media/mediaFiles/372855/IMG_20240331_114537390_compress86_jpg-3174590.JPG https://www.ar15.com/media/mediaFiles/372855/IMG_20240331_114600013_compress41_jpg-3174589.JPG Holes in the base of the piston aren’t vents. They have no interaction with gas You're right. I was thinking similar to the Zastava ported piston on AK's, but they are on the wrong end for that 
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Posted: 4/23/2024 1:15:55 PM EDT
[#3]
Do the KNS parts look like MIM parts or are they all machined? Same question for HB Industries but their parts clearly look machined. Seems like a poor choice to use injected metal / castings on these components but I’m not an engineer.
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Posted: 4/23/2024 1:34:52 PM EDT
[Last Edit: yamahawarrior89]
[#4]
Quote HistoryOriginally Posted By Park-Hit-Run: Do the KNS parts look like MIM parts or are they all machined? Same question for HB Industries but their parts clearly look machined. Seems like a poor choice to use injected metal / castings on these components but I’m not an engineer. KNS are machined |
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