The QB 57 delux side-lever take down rifle offers good value and reasonable power in a convenient, compact format. It is supplied complete with a 4×20 scope and a tin of Industry Brand pellets in a portable carry case. I ordered the .22 cal version.
The finish on the metal parts and wood stock is quite acceptable in this price range. Cocking effort is modest. The rifle feels very solid and balances well. Only the trigger guard, pistol grip and front sight are plastic. The trigger safety is not automatic but there is an automatic anti-beartrap lever.
Given the small loading port, the risk of finger injury on premature discharge is appreciable. It is advisable to block the cocking lever with an arm when loading this gun. This makes pellet loading a little awkward. The right-hand mounted cocking lever causes some inconvenience for left-handed shooters.
The supplied pellets should be discarded immediately. The tin may well contain undersized pellets which fall into or completely through the barrel. There is a high risk of dry-fires with possible seal damage. Crosman Premier hollow-points fit the breech well.
Perhaps due to its bullpup layout, this gun has a surprisingly loud report and ear protection is advisable for basement shooting. The gun is quite powerful and the Crosman hollow points will penetrate about 250 pages of a phonebook at 6 m.
Accuracy with the supplied scope was non-existent when firing at 6 m range. This may have been due to a large parallax error incurred using a scope lacking an adjustable objective and optimized for longer ranges. Fortunately, the iron sights are adjustable, offer a clear sight-picture and hold their zero well. Accuracy with these sights is acceptable for informal 6 m target shooting.
A decent scope for this rifle could easily cost more than the rifle, requiring as it does very long eye-relief and parallax correction down to 10 m target ranges. A red-dot sight is a lower cost alternative.
The breech-receiver securing nut has a tendency to work loose during repeated firing. This problem can be largely obviated by opening the breech port slightly while tightening the nut home. This procedure also greatly facilitates take down.
Overall, I am pleased with this rifle and would recommend it. It is probably not a good choice for a junior shooter due to the lack of an automatic safety and the risk of hand injury inherent in spring guns.