I confirmed yesterday that putting pressure on the front of the handguard on the SW 15-22 effects accuracy and POI. As a test, I moved the front rest to the back of the handguard towards the magwell and the POI shifted about 1 - 1.5" low. From what I've read, using the Tacticool .22 barrel nut adapter with a regular AR free float handguard can help alleviate the issue.
I'll have to decide if I want to go further with upgrades to this rifle in attempts to getting closer to being a 1moa shooter or just start a 10/22 build.
Why not do both?