And for those of you that are tempted to buy an IWS bracket but think you'll never get any use out of an IWS mount without the IWS Night Sight - think again. You can purchase a set of A.R.M.S. STANAG compatible rings which fit the IWS bracket (STANAG compatible). These are 30mm but you can buy inserts if you want to fit smaller tubed scopes. I used this combination on my L42A1 until the arrival of David Tomkinson's excellent repro SAS trialled brackets.