KEENZO Rail Mount, 11mm to 20mm Dovetail Picatinny Rail Extension Adapter Scope Mount Base Medium Profile Base Riser Mounting with 9 slots

Firstly brill delivery great price,functionality perfect for my use as iv 50mm front of scope and didnt want to take of open sights. With this I can use open sights and for further out shots that iv zeroed in for or near to it.with the extension you can bring scope eye piece back so when you shoulder rifle it’s in right place for you to look comfortable and clear.I use a rubber eye piece but still have it back a touch.QUALITY is exellent and I personally like you can do up with fingers and take off easily.yes a good bit of kit.

Had to wait 3 weeks for delivery as no longer a prime member.However rail is of good build quality and all metal.Would recommend.

Arrived quickly (even in adverse weather conditions)I used this to bypass iron sights on an Cyma SVU to bring the scope further up to the normal eye relief height.Good sturdy construction, threads are generous on thumb screws.No manufacturing defects as far as materials are concerned.A pretty standard 20mm rail.

And came as described

good quality Item made from aluminium

Well one of the nuts was on very tight, so tight I had to use a Allen key as a lever to undo it. Turns out the thread was crossed.Annoying but not so bad it was broken entirely. The clamp was a little loose on the rail unless I really yanked it on tight again using a lever.But it does do the job and has a nice rise on it.

The item is not precision machined, it's pot metal. No use as a scope mount due to it not being straight. As useful as an awkward paper weight.

Does its job perfectly