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#1 | |||
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dabbled in pacifism once
Join Date: Sep 2014
Location: haggistucky
Posts: 107
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Well I figure NFA thread since... well who else would want to mess with an A2 stock on an HK?
Anyway, I have post SB281 Form 1 for my HK94 and 53 clones. Normally, they would come in at about 26.75 and 28.25 inches respectively when SBR'd with an A2 stock. There are some other solutions with AR receiver extensions, but I wanted something different and not folding (so flash hiders and suppressors are OK). I've only built one so far, for the 94. And yes, I cut my German A2 apart for this science project. Thanks Frosh! The design allows pushing down on the spring loaded pin of the side of the stock to release the butt pad to slide in or out. The mechanism itself works pretty well, slides with little resistance. Spring is a bit stiff, but still operable one handed... and this means it is a nice positive lock. Currently I just have it drilled for two locations, full open and full closed. It still needs some cleanup and final fitting/trimming. More importantly finish the aluminum pieces with a nice, super evil matte black. Here are the telescoping tubes before trimming: ![]() Test fit of the delrin plunger and spring assembly: ![]() Test fit of the buttplate adapter: ![]() LOP checkout on the HK94 clone (2.5" of extension): ![]() LOP checkout on the HK53 clone (1.0" of extension): ![]() Butt plate fitting around the adapter: ![]() Closed position: ![]() Closed position (again): ![]() Open and locked: ![]() SB281 compliant ![]() ![]() Last edited by schnejerator; August 3rd, 2017 at 11:16 PM. Reason: f u photobucket |
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#2 | ||
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Member
Join Date: Mar 2013
Posts: 269
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If that works out this is an amazing idea
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#3 | |||
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The Leatherstocking
Join Date: Jan 2009
Posts: 3,922
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That's a fantastic idea, and something similar could really help all the people who'd like to SBR one of the Zenith clones.
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#4 | |||
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Senior Member
Join Date: Jul 2014
Posts: 24,183
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Burning the midnight oil I see. Nice work. Thanks for sharing your alterations with the rest of us. That is really cool!
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#5 | |||
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Senior Member
Join Date: Nov 2012
Location: MoCo
Posts: 3,147
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That is seriously clever! Exceptional job. (from a fellow amateur machinist)
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#6 | ||
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Junior Member
Join Date: Feb 2013
Location: Leonardtown
Posts: 8
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Genius! Funny how much innovation occurs when we are challenged by ignorant laws.
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#7 | ||
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Member
Join Date: Nov 2012
Posts: 532
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Awesome work. That is a great idea. I see many more hk sbr's in MD as a result of your creativity. Thanks for sharing.
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#8 | |||
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Senior Member
Join Date: Jul 2014
Posts: 24,183
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#9 | ||
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Banned
Join Date: Dec 2013
Posts: 12,083
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I actually posted the second response in this thread, but my computer locked-up just as I hit the Post button. Not sure what happened there, but very clever idea. Good old American ingenuity.
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#10 | |||
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Member
Join Date: Feb 2015
Location: Baltimore
Posts: 321
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That idea seems good enough that you could market/sell it!
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