Way too broad to answer, except with a broad answer. Metal parts may be "sticky" from lack of lubrication, dirt, etc. With an UNLOADED rifle. try using a penetrating agent such as PB Blaster to flush dirt, dust, rust- followed by a good cleaner/lube, such as CLP. Keep both off of wood parts of the rifle. If this does not restore the safety, then it needs a visit to a gunsmith for teardown, cleaning, replacement of parts.
Your question is too broad to answer- except to say it needs a visit to a gunsmith that can examine your rifle, and see what parts are broken, worn, or loose.
Without knowing the model, and having some idea of what is wrong or broken on YOUR rifle, the only answer is TAKE IT TO A GUNSMITH. Good questions equal good answers.
Located ontop of the rifle.
To fix sticky brakes on your car, you can try cleaning the brake calipers and pads, lubricating the moving parts, and checking for any worn-out components that may need replacement. If the issue persists, it is recommended to have a professional mechanic inspect and repair the brakes for optimal safety and performance.
You take it to a qualified gunsmith.
It's hard to answer this queston without knowing the make or model. So I suggest that you look on the net under 'Air Gun Repair" to find someone near you to repair your rifle.
The safety on the Springfield Stevens Model 84 .22 rifle is typically located on the right side of the receiver. It is a lever that can be pushed forward to engage the safety, preventing the rifle from firing. When the safety is engaged, it usually indicates a red dot or similar marking to show it is safe. Always ensure the rifle is unloaded before handling the safety mechanism.
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This Rifle was made by Milbro of Scotland between 1965-74. Your best bet is to search the web for "AirGun Repair" and locate someone near you to repair the rifle. Milbro is no longer in production. No one sells kits to repair the rifle but I'll bet there are several repair shops around that can repair it.
It all depends on the model rifle you want to assemble. I suggest that you go to to the link listed below and locate your rifle to see the Parts list and Manual. or send it to a repair shop to be fixed. look on the web under "airgun repair" or "air gun repair" and find a shop near you and have it repaired.
by sticking it together with sticky tape or get it fixed at JB HI FI
This is really a very old rifle. It was made between 1924 to 1950. Crosman offer a service to locate repair shops that repair older air rifles. See the link below and follow the prompts.