Well I had the same problems with my Umarex Thompson. I live in humid hot areas, not sure how much to lubricate or airgun oil it to keep from small leaks, I know the vintage stuff, new to replicas. How and where on magazine do you keep seals from leaking?
Thanks for patience with a "newbie"!
TimeBanditz
No problem. There is (IMHO) for the Umarex BB guns is simple; 100% Silicone oil. Especially in humid conditions. Silicone oil has 5 reasons to use it.
1) It is very very slippery.
2) It does not affect metal, plastic, vinyl or rubber, synthetic or natural. In fact it coats the plastics, rubber metal and preserves them over time.
3) This is the big one; it displaces water, moisture, frost etc. Water/moisture cannot exist where silicone oil is applied. It will bead up and evaporate or be expelled.
4) Because the SI (silicone) molecules are so small and close together Ultraviolet Radiation (UV -Suns Rays) are not strong enough to break the molecular bonds of the SI molecules. Silicone will protect where ever the oil is applied for a long long time and will NOT evaporate.
5) Operating temperatures are -51 F and +396 F.
LIthium and Lithium Grease as a lubricant I have also seen and herd of Air gunners/C02 gunners using Lithium or Lithium grease to lubricate their guns and magazines/clips, C02 chambers etc.
DO NOT USE LITHIUM ON ANY AIR OR BB GUN! Lithium-based lubricants can break down rubber and plastic components because lithium is petroleum-based. However,
"some say" that white lithium grease is safe for use on rubber boots for car parts, which are made of synthetic nitrile rubber or neoprene rubber. These types of rubber are resistant to petroleum grease except rubber and plastic infused with PTFE.
Even white lithium grease can cause problems with plastic gears that have been infused with PTFE or silicone as an internal lubricant. Look it up.
Lithium will destroy rubber, synthetic rubber, plastic, vinyl, in fact any plastic. The seals in BB and pellet guns are all made from rubber or synthetic rubber and plastic.
Petroleum oils will degrade rubber and plastic over time. I also lubricate the BBs and place a drop on the head of the magazine (both sides) where the BBs feed and where the BBs come out of the chamber. Although it is not a real firearm it does need to be lubricated; shooting 100s or thousands of BBs going thru the gun needs lubrication.
The least expensive 100% Silicone is "
WD-40 Specialist" (any Hardware store about $8 dollars a can) or you can buy "
Microlube" 100% silicone oil (Amazon) it has a higher viscosity i.e. thickness, (100/200/350 CST) than the WD-40 Specialist but is is more expensive. (I use both). Specialist WD-40 for BBs and MicroLubrol 200 silicone oil 200 CST oil and 350 CST for the guns and CO2 cartridges'. It is very thick ( e.g. 30 weight oil) and will not drop or run off of the cartridge tip. I also use it for lubricating and sealing the CO2 compression screw plug in the magazines, it works great.
Do not use regular WD-40, it will leaves a gunk behind. WD-40 was developed for NASA to remove ice from the outside of rockets (ice forms on the rockets from the cold liquid oxygen tanks and adds weight to the vehicle). WD stands for Water Displacement and it has petroleum products in it. The
WD-40 Specialist Silicone comes out like a firehose from the can (11oz). I use a tall container put a paper towel over the top poke the red tube through and empty the can into the container. You can use any container really. Then let the oil sit for 24 hours for it the de-gas (the propellent) do this in a well ventilated area, I do not know what type of Gas propellant is used but I would not breath it in.
I oil the entire gun ("
Microlube silicone oil at least 200 CST"), inside and out and it is made in the USA not China. Wipe it clean and you should not have any more problems with rust.
See my video about separating the Upper receiver from the Lower receiver on the M1A1 Umarex Thompson.
