Which grip size on the Glock 21 Gen4 matches the original 21?

Pops1085 · May 4, 2019, 12:23 AM

I get that most people will go "why?" but honestly I just shot my original Glock 21 (non-SF) Gen3 so well I'd like to figure out which grip insert on the Gen4 is the same distance from the back to the trigger.

I did some searching but not a lot of people are looking for this.

mr bolo · May 4, 2019, 12:28 AM

maybe you could wrap a piece of masking tape around the grip and measure it for comparison? and try to match the same size with the Gen 4

then keep adding a different one until the size matches the original grip size of the G21

mdThanatos · May 4, 2019, 12:32 AM

I believe without any of the backstraps it is the same as the SF, and the medium without a beavertail is the same as the Gen 3 standard.

Theohazard · May 4, 2019, 08:28 AM

MdThanatos is correct: The Gen 4 with no back straps has the same grip dimensions as the SF Gen 3 models. The Gen 4 with the regular medium backstrap is the same as the regular non-SF Gen 3 models.

Pops1085 · May 5, 2019, 11:52 AM

Awesome, thank you very much. I don’t have the gen3 anymore, otherwise I would’ve checked myself.

May 4, 2019, 12:23 AM	#1
Pops1085 Senior Member Join Date: November 25, 2012 Posts: 369	Which grip size on the Glock 21 Gen4 matches the original 21? I get that most people will go "why?" but honestly I just shot my original Glock 21 (non-SF) Gen3 so well I'd like to figure out which grip insert on the Gen4 is the same distance from the back to the trigger. I did some searching but not a lot of people are looking for this.

May 4, 2019, 08:28 AM	#4
Theohazard Senior Member Join Date: April 19, 2012 Location: Western PA Posts: 3,829	MdThanatos is correct: The Gen 4 with no back straps has the same grip dimensions as the SF Gen 3 models. The Gen 4 with the regular medium backstrap is the same as the regular non-SF Gen 3 models. __________________ 0331: "Accuracy by volume."

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May 4, 2019, 12:28 AM	#2
mr bolo Senior Member Join Date: November 19, 2012 Posts: 432	maybe you could wrap a piece of masking tape around the grip and measure it for comparison? and try to match the same size with the Gen 4 then keep adding a different one until the size matches the original grip size of the G21

May 4, 2019, 12:32 AM	#3
mdThanatos Senior Member Join Date: August 19, 2008 Posts: 104	I believe without any of the backstraps it is the same as the SF, and the medium without a beavertail is the same as the Gen 3 standard.

May 5, 2019, 11:52 AM	#5
Pops1085 Senior Member Join Date: November 25, 2012 Posts: 369	Awesome, thank you very much. I don’t have the gen3 anymore, otherwise I would’ve checked myself.