Things I liked: Very well made
Things I would have changed: Base is app 19mm high before installing rings. This is way too high for the RWS 48 even with low rings. Make a set with a height of app 12-14 mm's
What others should know: If your rifle does not have a raised stock like the RWS 48 this is way too high for proper scope mounting even with low rings. The model 52 with it's raised cheek piece monte carlo type stock would be a better fit but I bet it's still too high. After reading the reviews here it is obvious that many shooters do not understand how a scope should be mounted on a rifle. Scopes on any rifle, firearms or air, should be mounted as low as possible and as close to the bore of the rifle as possible with just enough clearance to allow the front objective of the scope to clear the barrel. Clearance the thickness of a dime is plenty and many of my rifles have less than that. If you are not familiar with scope mounting do yourself a favor and go to a Sportsmans Wharehouse, local gun store or gunsmith and shoulder a bolt action rifle with a scope mounted and check out your eye alignment with the scope. Your cheek should be solidly against the stock and you SHOULD NOT have to raise your head to see through the scope. If you do you will never shoot your best and the set up will always feel awkward and uncomfortable because your head is not melded with the stock. I have also noticed that many airgun scope mounts do not allow the scope to be positioned forward enough to allow proper eye relief without hitting the mount. Your head should be down on the stock and forward slightly. You SHOULD NOT have to pull your head rearward to obtain a clear sight picture in the scope. If you have to move your head to the rear there is not enough forward movement possible with that scope mount. Also stay away from those rediculous "see through" mounts that raise the scope way up to allow iron sight use. These points are all scope mounting 101 but they are absolutely critical. If you have access to a local gunsmith you can usually talk to them for no charge if you are not sure about what to do. Beware the "Rambo" characters in gunstores who think the AR platforms are the only rifles worth talking about and are military wantabees.
Things I liked: Rock solid, screws do not strip when tightened. Shorter length allows moving all the way forward on RWS 48 to allow scope to be moved forward for proper eye relief without hitting mounts. Four ring screws on each ring. Price is great. Would give six stars if barrel droop compensation was built in.
Things I would have changed: Offer a steel version. Build in some compensation for barrel droop so the scope rings don't have to be shimmed. Add a fourth screw on the base for added staying power on magnum spring guns. Add additional set pin holes in base to allow set pin to be used on popular rifles when mount is centered, moved all the way forward as well as in the default position. Default position did not work on my RWS 48 since scope hit the mount before proper eye relief was achieved when moving scope forward.
What others should know: This mount was used on an RWS 48 and was selected due to its lower height and shorter length. The lower height allows scopes to be mounted closer to the bore which is always better since your head does not have to be pulled up off the stock in an awkward position in order to see through the scope. Close your eyes when shouldering the rifle, find a comfortable position on the stock with your cheek solidly on the stock and your head slightly forward. Open your eyes, if you have to raise your head to see through the scope the mount is too high. The shorter lenghth allows the scope to be moved forward enough to achieved proper eye relief. You should not have to move your head to the rear to get a perfectly clear, round sight picture in the scope. This mount will allow use of 40mm scopes with an AO and an overall max diameter of app 48mm when used on the RWS 48. Airgunners: do yourself a huge favor if you are not familiar with proper scope mounting techniques and go to a local gunsmith or reputable gun store and shoulder a rifle with a properly mounted scope. I am shocked at many of the rediculous mounts offered for airguns and the apparent lack of knowledge as to how to mount scopes. I recently bought an RWS combination package with the rifle and an RWS 4x32 scope and mount. The mount was so high it was unusable and the crosshairs broke in the scope after 10 shots. You would think the RWS folks would know which mount would work with their own scope but they are content to package this junk and hope a newcomer will not know any better. I contacted RWS and was told that their "better" scopes all have 30mm tubes and are much better quality. They don't seem to care that only a giraffe could use their mounts unless the scope objective was greater than 60mm.
Things I liked: Fantastic accuracy. Flat trajectory.
Things I would have changed: Screw on lid. 250 count instead of 200.
What others should know: Fantastic accuracy out of an RWS 48. Single hole groups at 50 feet and half inch groups at 25 yds. off a bench. Zeroed at 25 yds hits only 1-1/12 inches low at 50 yds. and still holding 1 inch groups with no apparent keyholing. Good penetration at 50 yds. Accuracy was as good as with much heavier pellets. This is my new go to pellet for all around use.