Had 29 and have the 29SF and can't tell any difference, the difference is front to back length of the grip by 3mm I was told by someone on Glock forum. What ever the difference you need them side by side to really compare.

The G-29 accuracy has driven a few 1911 fans nuts at the gun club with its ability hit pins faster and more often at 25 yards then the 100 year old warrior they paid 2 to 3 times more then what I paid.

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Cranky Old Retired USN Guy