I will be using a Target Master 22LR conversion bolt group with a CMMG Barrel collar and a Beyers 22 LR Ultralight Target 16.5", 1in 16" twist, .920 bull - 7075 aluminum barrel with a Chromalloy steel button rifled liner. Reviews have reported groups of less than 1/2" at 100 yds with this barrel. The barrel and barrel collar will hopefully be on order tomorrow.
All the general lower receiver parts are ordered along with the following custom parts.
DPMS Upper Receiver Stripped AR-15 Low...
AR-15 22LR Target Build