Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
AR15.COM
4/1/2009 4:18:11 PM EDT
I have a chance to pick up a USP 40 at a pretty good price. I am not all that familiar with them so my question is. What's the difference between the older models and the newer ones? The one I am looking at is a older model. Any issues I should be aware of?
4/1/2009 4:48:25 PM EDT
[#1]
Do you know the "date" code????

A - 0
B - 1
C - 2
D - 3
E - 4
F - 5
G - 6
H - 7
I - 8
K - 9
4/1/2009 5:58:51 PM EDT
[#2]
no I don't, but I will get it.
4/1/2009 6:37:55 PM EDT
[#3]
IIRC the pre-'94 models have traditional land&groove rifling.  Later models have polygonal rifling.

IMO poly rifling is a bit easier to clean, but it's contraindicated for unjacketed bullets (lead fouling leading to overpressure).