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This kit will prevent the spring flyaway that happens when you remove the butt stock without paying attention. It is also a necessity when building an AR pistol. Includes a tap, set screw, instructions and an allen key. All you will need is some tap oil, a tap wrench and some snips to trim your present spring 1/8" shorter. Extra set screws can be added for 50 cents each. Price is 5.99 shipped (Calguns-USA only). Money orders preferred but will do discreet paypal (add 4 percent), listed as "tap and key set" only. IM or email me. This is a great mod to do, no more hands and knee searches after it flies out...
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