This installation option may not work if the foreend thickness is thicker than the nutsert, people should first do a measurement to verify.
Not any new idea, but just another option to easily add a QD stud for either sling or bipod.
I use Harris #2 (http://www.harrisbipods.com/HB2.html) but reverse the installation as it is designed for. In fact, credit should go to Mickey3Gun and Rotten, their posts gave me the idea. The only different is that there is no grinding at all.
Gun is 580 Tactical with factory synthetic stock. Here's what I do :
1. drill a 5/16" hole thru the forend, then seat #2 with the nutcert thru the hole. It is a perfect fit and the top of the nutcert is actually flush with foreend.
2. When we attach the stud from the nutcert side, there is a small gap between the Harris washer and the stud. So I bought a black nylon washer from Ace to fill the gap. Result is perfect!
3. Trim the extra thread from stud with Dremel so that it is flush with the flange. Install the liner. Perfect fit.
It is so straight forward and perfect fitment, I am thinking of adding another #2 to the side of the foreend so that I can side-mount a sling
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