Quick cleaning question for USP

Soli

Soli

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I have sand in my receiver... how do I clean it out? On the surface, it looks clean, but I can tell by lowering the hammer and playing with the trigger that it feels 'sandy'. I already cleaned the slide, barrel and spring: those are fine.

I'm a noob, so detailed instructions would be appreciated :)
 
So, bathe the entire lower in wd40 or clp? I'm just curious about the process: how does it help remove the sand?
 
how did you get sand in it? ANyhow, you should perform a complete takedown of the pistol, clean with CLP and cloths. When you reassemble, place some gun grease (I use Brian Enos Slide-glide -lite), all around the hammer, hammer strut, trigger bar (especially where metal meets metal, or metal meets frame!).
The top of the hammer strut where it rests and moves inside the hammer is very important to be well lubricated. Regular gun oil will work,but will quickly dissipate.

DO NOT use wd-40
 
While it was empty, I was putting it in my holster and somehow didn't place it properly: it fell on the ground and for some reason, there was a lot of sand there. Some of it went around the hammer and other little spots...

So, I have to take it apart completely? Sigh. That's gonna suck...
 
What you can do is take it apart and lightly polish (re: minor detailing ) any scratches, and look for burs to smooth. I had heavy scoring on outsides of the hammer, where is was rubbing against the frame plastic residue left over from the manufacturing process. On my custom sport this was not a problem, but in my stainless, the frame was rubbing hard on both side of the hammer and you could actually see the curved area where it rubbed some of the hostile environment coating off.
 
never use WD40 on your guns.

i would strip the gun down as much as possible and then use a compressor to spray off the sand and then rub / lube the remaining sand off.
 
Compressed air sounds like a good starting place before I commit to turning my USP into parts. :)

I'll try all of that. Thanks guys!
 
If Soli dosent want to disassemble the pistol any kind of light oil (WD40) is going to help clean out the crud/sand along with some compressed air.

It may not be the best idea, but a couple of guys I shoot with use WD40 almost exclusively, and one of them has over 100,000 rounds through his .45 so I don't really see it being so horrific.
 
You could try flushing it with non-chlorinated brake cleaner or gun scrubber. Use the whole can if necessary. This would be way easier than a detail strip and is pretty cheap so you won't have wasted much money if it doesn't get it all out.
 
UncleWalther said:
Don't rush into a complete dis-assembly. At very least, track down an armorer's manual for the USP. There's some available on the Internet.
Click to expand...
I second Uncle Walther's suggestion. The USP isn't the easiest pistol to disassemble, so make sure that you are comfortable with what you're doing or you'll have to send it to the gunsmith in a ziplock bag.
 
Can of air didn't work... still sounds and feel gritty. Where can I find the USP armorer manual online?

EDIT: I think I found it... black and white manual, no visuals for the disassembly?
 
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Alright fellas!

I disassembled the USP, cleaned the parts and receiver, reassembled and function checked it: perfect and it's no longer gritty! :)

Don't be afraid to disassemble it... if a mechanically retarded person like me can do it, so can you!
 
USP, yep... I went step-by-step and figured out the stuff that wasn't necessarily there. I also had the armorer manual in case.
 
Another USP question:

Is it normal for the catch to be a little loose / have some play? I noticed that my USP45 has it as well, though nowhere near as much. Should I be concerned? I mean, it passed all the function checks... :runaway:
 
Soli said:
Another USP question:

Is it normal for the catch to be a little loose / have some play? I noticed that my USP45 has it as well, though nowhere near as much. Should I be concerned? I mean, it passed all the function checks... :runaway:
Click to expand...

It is loose enough to slightly move the larger piece, just make sure the sear axle goes thru all the proper components, and that the latch goes over the hammer axle properly.
 
You might want to start with plenty of really hot water. It is cheap and pretty effective. Thoroughly flush the receiver, again and again. Shake, blow out with compressed air. Then use WD40 to displace any remaining moisture. Relube as required.
 
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