The 30SF fits my size 9.5 glove hands much better than the 30. This isn't the 21 you are referring to, but is similar to the type of change.
I have a 22 [gen 3] and a 23 [gen 4]. I find the gen 4 23 [with no adaptors added] fits my hand much better than the gen 3 22.
In gloves, I always had a 'touch' of space left over at the end of my fingers that wasn't filled, as my palm breadth was wider than my finger length. That makes the reach to the front of the trigger feel a bit awkward with the Gen 3 standard size grips.
With a G21, they are that much thicker, and I would NEVER buy a G21 [or G20] UNLESS it was an SF. I would take one as a gift, I guess. However, when I shot a G20 [same frame as G21], it did feel 'like a brick' in my hand. The G22 feels bad enough, but I couldn't pass it up for the price [police trade in with NO wear and NS, for $300 locally].
I have a 22 [gen 3] and a 23 [gen 4]. I find the gen 4 23 [with no adaptors added] fits my hand much better than the gen 3 22.
In gloves, I always had a 'touch' of space left over at the end of my fingers that wasn't filled, as my palm breadth was wider than my finger length. That makes the reach to the front of the trigger feel a bit awkward with the Gen 3 standard size grips.
With a G21, they are that much thicker, and I would NEVER buy a G21 [or G20] UNLESS it was an SF. I would take one as a gift, I guess. However, when I shot a G20 [same frame as G21], it did feel 'like a brick' in my hand. The G22 feels bad enough, but I couldn't pass it up for the price [police trade in with NO wear and NS, for $300 locally].