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The Weaver Offset Rail Adapter 99671should not prevent the KelTec Sub2000 from locking when folded. However, it would also depend on what is mounted to the Weaver Offset Rail Adapter 99671.
This is a handy adapter if you have only a single rail on the top of your firearm and want to add an accessory like a laser or light. It is very easy to install and will easily fit beneath most optics.
Pros: Simple to install
This is a great rail piece. It fits and holds snug with a micro red dot attached under a magnified optic. I have not yet had any issues with it. Easy to acquire the red dot with a slight tilt on the rifle. Buy with confidence.
I bought this off-set mount from OP along with other similar products that were available (DD, JP enterprise and MI).
Out of the four, this mount has the largest foot print (closely followed by JP) but only has one fastening bolt(this shouldn't be a...
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Great little attachment, fits under scope on picatinny rail between rings, fits just as tight as can be.
Pros: Strong, easy to install, fits under scope
Cons: None
This sturdy offset mount is just the thing for mounting optics a taste further away from directly above the action to enable a better cheek weld or for such add-ons as lights.
This mount sits perfectly below my scope, used for a red dot for close aiming, pretty well built and feels very strong. I will definitely buy another one or two for my other equipment, Highly recommended.
Weaver Offset Rail Adapter 99671 allows you to quickly switch optics without head shift. With the Weaver Offset Rail Adapter 99-671, you can quickly go from a primary, magnified optic to your favorite red dot sight. The Offset Rail Adapter by Weaver attaches to any Picatinny spec rail and allows operators to attach a miniature red dot in the offset position. The Weaver Off-set Rail Adapter Mount 996-71 can also be used for lights and other accessories typically attached to a Picatinny rail. We carry an extensive collection of Weaver Mounts, Rings and Bases. For our complete selection of products by Weaver on sale please visit our Weaver page. For more Rifle Scope Mounts Rings Bases please visit our Rifle Scope Mounts Rings Bases store section.