GLOCK 17 Generation 3 vs. Generation 4 :: First Impressions
I've received a handful of emails inquiring what the differences are between Glock's 3rd and 4th Generation pistols. What we will be comparing today is an example of the Model 17 in both generations:
Generation 3 Glocks have a grip texture that is considered by many to be quite slick. Late in the 3rd Gen Glock released what they called the 'RTF' or Rough Textured Frame. The RTF was so aggressive that it would tear clothing and fray seat belts over time. Many compared it to the feel of Velcro in the hand. Then came the Gen 4 Texture which is just as effective as the RTF without being so aggressive.
Gen 3 Texture
Gen 4 Texture
The Gen 3 texture was an attempt at replicating the feel of 'Grip Tape', a.k.a. Skateboard Tape, but it did not transfer over very well once molded into polymer. The Gen 4 texture is a pattern of large blocks that provides a comfortable and solid purchase of the frame.
The Gen 3's frame has no configuration ability; it is what it is. While the Gen 4 allows for the addition of backstraps that create a larger frame for folks with larger hands.
Top: Gen 4 // Bottom: Gen 3
Since the Gen 4 has an exchangeable backstrap system; the bare frame is a bit smaller than the Gen 3 frame. The addition of the smallest backstrap creates a grip similar to the Gen 3; the other backstrap makes the frame even larger. The Gen 4 comes with two backstraps from Glock.
Glock enlarged and made the magazine release reversible in the Gen 4. This makes the Gen 4 more accommodating to lefties. A question I get a lot is , "Will Gen 3 magazines work in the Gen 4?" Yes, as long as you don't left-ify the magazine release.
Left: Gen 3 // Right: Gen 4
Guide Rod and Spring
Gen 3 uses a single spring and polymer guide rod that is a one-piece 'captured' assembly. The Gen 4 uses a two spring design and a polymer guide rod assembly that is still captured for ease of assembly. The new duel spring assembly is suppose to decrease perceived recoil. "Can I put a Gen 4 guide rod in my Gen 3?" No, due to the duel spring design the Gen 4 has a larger hole on the slide that the guide rod interfaces with.
Top: Gen 3 // Bottom: Gen 4
The Gen 4 Glock is definitely a design improvement compared to earlier generations. I am speaking too the addition of interchangeable backstraps and a reversible magazine release. In many ways this was done in order to stay competitive with Smith & Wesson's M&P Pistol. Being a newer design; the M&P arrived on the market with interchangeable "palm swells" and a reversible magazine release along with an ambidextrous slide lock as well. But I digress...