We have been lucky enough to get several of the brand new Gen5 Glock 17’s and Glock 19’s, as the Gen5’s have been highly anticipated. This will be one article in a series on the new Gen5’s. Now that we have them, let’s strip one of the Gen5’s all the way down and look at the new parts.
The new Gen5’s have several unique, redesigned, internal components that are very different from all other Glock’s. You can see it is a 2 pin design, like the old Gen1 and Gen2 Glock’s, with a Gen4 magazine release and stippling. I have completely stripped this Gen5 G19 to give you an idea of what the new internal parts look like. When completely stripping the Gen5, you will notice some of the parts are similar in design to the single stack G42 and G43, just beefed up for the larger Gen5’s. Other parts are totally new and uniquely design for the Gen5 Glock’s. This makes the Gen5’s a completely redesigned Glock, that has very few part compatibility with the Gen1, Gen2, Gen3 and Gen4 models.
Below are the parts that are shared with previous generations. Some of this may change in the future as some parts are on the fence for now. I will list these to get them out of the way.
- Gen4 Magazine Release
- Gen4 Recoil Spring (RSA) – 9mm Only
- Gen4 Magazine Catch Spring
- Gen4 Trigger Housing Pin
- Extractor Depressor Plunger Assembly (Loaded Chamber Indicator only)
- All Gen Connector
- All Gen Magazines & Internals
- All Gen Spacer Sleeve
- All Gen Firing Spring
- All Gen Channel Liner
- All Gen Spring cups
- All Gen Sights
Throughout this comparison I used parts from a Gen2 G19, a Gen3 RTF2 G17 and a Gen4 G19. While I will not go into a complete tutorial on how to strip your Gen5 Glock down, it is not extremely difficult and you can learn how to properly do it with some quality research.
When stripping the Gen5’s completely down, pay close attention to the parts that are significantly different in their design and placement in the firearm, compared to the previous generation of Glock models. Below are several pictures of a completely stripped Gen5 G19, the new internal parts and part comparisons to some previous generations.
LOWER RECEIVER PARTS
The Gen5 has a completely redesigned Lower Receiver. Only two or three small parts are compatible with previous generations and you will see this below as we detail those parts. The Gen5’s have gone back to a two pin frame, like the Gen1 and Gen2 9mm Glock’s. The most noticeable external changes are the beveled & flared magazine well, and the removal of the finger groves. The stippling is very similar to the Gen4 but the little pyramid stipples feel just a little smaller. The Gen4 replaceable back strap system also appears to be the same.
note: I have seen a few places say the trigger guard has been undercut more, to reduce the (Glock Knuckle) effect that some experience when firing. From what I can tell this is not the case. I cannot see or feel that the undercut has been changed at all, it appears the same compared to all my previous generations.
As stated before there are two Pins on the Gen5’s. The Trigger Pin is new and redesigned. The two cut slots in the pin are a-lot shallower and wider than previous generations. It will not work in any other generation. The Rear Trigger Housing Pin is the same as the standard Gen4 Glock pins for the interchangeable back straps.
The Locking Block is a complete redesign. When removed it looks like a Gen3 or Gen4 two pin block. Although it will slide into previous generation frames, the pin holes do not line up.
Ambidextrous Slide Stop Lever:
The Slide Stop Lever is a completely redesigned part. It is thicker and seams more robust than previous generations. The thumb tabs are also angled outwards slightly more.
Trigger Mechanism Housing w/ Ejector & Connector:
The Trigger Mechanism Housing (TMH) with Ejector, are very similar to the G43 in design. The TMH is not compatible with the previous generations. The Connector however appears to be the same as all previous generations.
The Trigger Spring parts, from what I can tell, also appear to be similar in design to the G43, and are not compatible with the previous generations.
The Trigger Bar is another completely redesigned part that is not compatible with previous generations. If you have a Glock 19, you will notice that the Gen5 G19 comes with a smooth faced trigger and not the traditional serrated trigger.
Slide Lock & Spring:
The Slide Lock and Slide Lock Spring design is similar to the G43. It is just larger for the Gen5’s. Although the Slide Lock looks almost identical to previous generations, the cutout for the spring at the bottom is wider to accommodate the new coil spring. The Spring is a coiled spring instead of a leaf spring of the previous generations.
The Magazine Release looks to be a standard Gen4 magazine release. It is just slightly extended and feels more rounded at the edges. It is compatible with the Gen4’s and this mean the Vickers extended Gen4 magazine releases should be good to go in the Gen5.
Magazines are compatible with all generations. The floor plate has just been reshaped in the very front. The Orange follower is just Orange. It is still the same 9mm #6 follower, so in the future you will probably be able to switch out your black followers to Orange, when the followers become available. The magazine body is also the same.
SLIDE UPPER PARTS
The slide on the Gen5’s has been redesigned of course, with an ambidextrous slide stop cut on the right side and reshaped/contoured muzzle end. The breach face is also different to accommodate the new Firing Pin shape. One thing I found interesting, is the slide is just slightly longer than previous generations at the muzzle end. Less of the barrel and recoil spring is protruding from the slide, compared to previous generations. The recoil spring assembly is actually recessed back into the slide slightly.
Barrel & Recoil Spring Assembly:
The Barrel is marked with a 5, noting it is a Gen5 barrel. The barrel has traditional (lands and grooves) rifling and does not have the standard Glock OEM Polygonal rifling. This new barrel is the Glock Marksmanship Barrel (GMB). The barrel has a deeper recessed crown and the rifling extends closer to the chamber. For fun I swapped out the barrels on several different G19’s with the Gen5 barrel and I put older barrels in the Gen5 G19. I did not have any assembly or disassembly issues. I would contact or wait for Glock to approve this before attempting to fire any of the barrel swaps. This might be a sign that you can upgrade your previous generation Glock’s with the GMB barrel. That would be a smart move if Glock intended to sell the GMB as an upgraded barrel.
The recoil spring assembly (RSA) on the G19 appears to be a standard Gen4 duel captured recoil spring. The Gen5 G17 RSA looks a little longer. I believe this is due to the Gen5 G17 barrel lug being different than previous generations. The Gen5 G17 has a G19 sized locking lug. The picture below was provided by an AR15.com member.
Slide Cover Plate:
The Slide Cover Plate is a totally new design to accommodate the new internals. This part is not compatible with any previous generation. The Orange Glock Armorer’s Slide Cover will work for checking your Trigger Bar and TMH connections/tolerances.
Firing Pin Safety:
The Firing Pin Safety is a completely redesigned part, specific to the Gen5’s. Again it can only go in one way. The notch on the left side of Firing Pin Safety faces the Firing Pin. The Firing Pin Safety Spring appears to be the same part as any other generations.
Firing Pin Assembly:
The Firing Pin assembly is very interesting. Some parts are the same as previous generations and others are not. The Spring Cups, Firing Pin Spring and Spacer Sleeve appear to be the same as previous generations . The Firing Pin itself has a redesigned tear drop like rounded tip. The cuts for the Firing Pin Safety connection are also different at the head of the Firing Pin.
Extractor Depressor Plunger:
The Extractor Depressor Plunger Rod, Depressor Plunger Spring and the Spring Loaded Bearing appear to be identical to previous generations with the Loaded Chamber Extractor. The spring looks slightly different in color and is slightly longer. This may be for added strength and pressure for extraction.
The Extractor looks to be similar in design to the previous generations. There are some minor shaping and cut angle differences. Not sure if it is compatible with previous generations but I do not see why it would not be.
If you are not a Glock Armorer, Gunsmith or you are very unfamiliar with stripping your Glock down; I would not recommend any disassembly past regular field strip maintenance. Most people will have no need to break the firearm down to this level. Hopefully this answered some of the questions on the new parts and the compatibility of parts with the previous generations. If you have any questions or we missed something you wanted to know about, leave a comment or reach out to us on our Facebook Page.