For what it’s worth, and for those following this thread, I emailed Tech-Sights over the weekend, and woke up this morning (Monday) and got the answer. Here it is. Their front sights requires the A1 front sight adjustment tool. I may just go ahead and order these sights. The stock sights on my 10/22 are hard to see sometimes and these sights would increase the sight radius considerably.
I'm considering your TSR100 sights for my Ruger 10/22. I've searched your site extensively, and I'm just not sure which tool is needed for adjusting the front sight. The 4 prong A2 tool, which I already have for my AR-15, or the A1 5 prong tool. Which tool is used for adjusting the front sight?
Our sights require the 5 prong tool for adjusting the front sight. However if you were to swap the post out for any standard AR post that uses the 4 prong tool, then you could use the tool you already have. We only sell the 5 prong tool called the TS155. Thank you for your interest in our sights.