Quoted: Thanks for the replies.
Vinh, that’s a generous offer, and I’ll consider it.
Pat Rogers was talking up the PR-4 mount during a class this summer, so it must be great. I like the low profile the KAC produces though, but I suppose the PR-4 isn’t too big.
I assume that the PR-4 mount stays clamped around the rec. extension.
Anybody else have some experience with these?
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The TD PR4 and the DD were designed for use on issued rifles. Those rifles where the user did not own, and or was not allowed to remove the stock for any reason. Both work the same way, they clamp onto the receiver extention tube.
The DD is great although the TD has a slightly smaller footprint since it snugs up under the castle nut. With both mounts you cannot close the stock fully, since the mount will block it from locking in the last fully closed position. The TD has that third mounting point in the rear, and as seen in my pictures the stock will close with the swivel in the rear position.
Which stock are you using? The Colt? I have more pictures of the TD mounted on various stocks.
Both mounts are no gunsmithing add ons, and can be done in five or ten minutes with a simple wrench. Once installed, you need not remove either mount, unless you want to remove the receiver extension. Both do add a small bit of weight, but it is not worth worrying about.
I like the TD best, but there is nothing wrong with the DD, and I can recommend either one.