I've got one of these and am looking for the mounting brackets for storing the carbines, it holds the full size AR's very well but I need the little wire spring brackets that push the barrel towards the support by way of pushing out on the stock.

Part #NSN 5340-01-230-3181

Can be seen in:

Technical Manual
Unit and Direct support Maintenance Manual
for M16A2 and M4 Carbine

May of 1991

Army TM 9-1005-319-23&P

If anybody has any idea what these are I sure could use some.
 Thanks

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