Can the FCG trigger weights be adjusted to 4½ pounds and greater?

No, the FCG’s (Fire Control Group) trigger weights cannot be adjusted to 4½ pounds and greater on these models. FCG trigger weights are more or less the same between all three models and range as follows based on toggle spring pair used:

• Plain or Gray: 2 ½ – 2 ¾ pounds
• Yellow: 3 ½ – 3 ¾ pounds
• Blue: 4 – 4 ¼ pounds