Low-cost adjustable laser sight

Low-cost adjustable laser sight
The bottom of the main body is designed with a standard Picatinny rail interface, which can be adapted to most tactical rails. To install, simply slide the main body into the rail and tighten it with screws.
   The laser module is a children's toy-style laser pointer, 13mm in diameter and 66mm in length. Theoretically, laser pointers with a diameter ≤13mm and length between 56-66mm should all be compatible. To install, first insert the laser pointer into the main body, then use the elastic tail support to lock and secure it. By fine-tuning the screws controlling the direction, the laser's aiming point can be adjusted by approximately 1.5° (for example, if you need to shift the aiming point towards side 2, loosen the screw on that side and tighten the screw on the other side).

Key dimensions for compatible laser pointers are as follows:
A=13mm, B=56-66mm, C≈27mm, D≈3mm

Note:
1. If you have M5*6 headless screws and M5*6 thumbscrews, that's best. If not, it's okay; the ones printed from the print plate can also be used.
2. There are several supports inside the elastic tail support; it is recommended to remove them with tweezers.         

PS: The original distance between the laser sight and the barrel is around 10-20 meters. The fine-tuning built into the model should have been sufficient for zeroing. However, due to the craftsmanship of children's laser pointers, the laser itself has an inherent offset, so a 1° tilted main body had to be added.