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Beretta AL391 Urica.Lubrication

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8.4K views 6 replies 5 participants last post by  Anonymous  
#1 ·
I have a question regarding lubricating the magazine extention rod that the action piston slides on & the outer surface of the piston.

I have been following the instructions in the owners manual,which advises to clean with "Beretta" oil & then wipe dry.

Some of the shooters at our club have advised me to leave oil on the piston & extention rod. I have always thought that oil should not be used on gas system parts as it tends to cause carbon buildup. Some of the people who advocate leaving oil on the a/m parts are longtime shooters & their guns appear to be functioning 100%.

I would appreciate hearing what others are doing to maintain the Beretta 391.

Rod. :?: :?: :?:
 
#2 ·
I shoot mine wet. Heck most times I put a drop of oil on the piston rod as I assemble my gun to shoot it. It has never caused a problem that I know of and although dirt builds up on the rod, it cleans up very easily.

Some people may not like this next paragraph, but....

I tend to shoot 100-150 rounds per day when I shoot, and it may be several times like that before I clean the gun again. So it could be as many as 400-500 rounds between cleanings for me.
 
#3 ·
First, beware of the instructions to "clean with Beretta oil." Remember this is an Italian manual translated to English. The Beretta oil is just that - a lubricant, not a cleaner. Also, you'll note the manual tells you NOT to lube the cylinder, piston, shaft, or valve. Having said that, I always think it's a good idea to lube something where you have metal-to-metal contact -- in this case, the shaft at least, since the piston slides on it. I would probably keep the piston dry, I have heard they can cake pretty badly if you lube them. Bottom line is use your own judgment and preference. I tend to be somewhat liberal in lubing my guns, but I also clean them fairly regularly. Like Casual Shooter, I prefer wet to dry, all things being equal.
 
#4 ·
I lube my automatics generously with Breakfree CLP. When I think I have all the moving parts generously lubed, then I add a little more for good measure. :lol: Works for me. In between cleanings I'll add a few more drops to the piston shaft, magazine tube, action bars, receiver rails, and bolt assembly. The trigger assembly gets enough "splashed" oil that I don't need to add more to it.
 
G
#7 ·
First a correction -- I think the Beretta Oil is a CLP (Cleaner, lubricant, protectant )...says so on a bottle or manual I saw somewhere at one time.

I oil the extension rod with Breakfree CLP --but then wipe off. Breakfree leaves a nice thin residue, that actually gets slicker with time. (Don't ask me how... I read that somewhere too!)

Interestingly, the extension tube on my brand new 20 ga. (this year) 391 is covered with a teflon like material that is slick all of the time. The extension tupe on my older 12 ga is a much more porous material with greater potential to get gummed up.