I have a Sig Mosquito Sport model, 22 LR.

After shooting about 150 rounds the other day, I was going to clean the gun but could not remove the counterweight on the front of the gun. I have never had this problem before.

I removed the threaded pin that secures the counterweight in place but the counterweight would only move forward about a quarter of an inch. It would not go past that point no matter how hard I pulled and twisted the piece.

I put some Rem oil on both sides of the barrel and slid the counterweight back and forth and then let it sit overnight. I still could not remove the counterweight in the morning.

If anyone has had this problem, please give me advice on how you resolved it.

Thanks and Happy Father's Day to all the Dads out there.