Ask for help at a gunshop
Ask a gunsmith for help.
To break down a .40 caliber firearm, first ensure it is unloaded. Remove the magazine, pull back the slide to eject any round in the chamber, then field strip the firearm according to the manufacturer's instructions. This typically involves removing the slide, recoil spring, barrel, and other components for cleaning and maintenance.
To break down a Hi-Point 9mm, first ensure the firearm is unloaded. Then, follow the manufacturer's guidelines to disassemble the gun by removing the slide, barrel, and recoil spring. Be sure to clean and lubricate the components before reassembling the firearm.
What Model 51 pistol or a rifle and what model?
You need a gunsmith
Ask a gunsmith for assistance.
Take it to a gunsmith
Best to get help from a qualified gunsmith.
Recommend you ask a gunsmith for assistance.
Best to ask a gunsmith for help.
You have to hit it with a slede hammer until it breaks down then you've done it
You can get a manual for free from S&W on their website.