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SHOP NOWThis video continues the discussion on common Glock mistakes and how to avoid them. It focuses on generational parts mixing, ammo selection, and risky DIY modifications.
The hosts open by joking about Glock’s “generations of perfection” and introduce this video as a follow-up to a previous episode on things not to do to a Glock. They emphasize that the pistol belongs to the owner, so modifications are ultimately a personal choice. Their goal is to share opinions and observations about common mistakes seen with Glock pistols, not to dictate rules. The discussion is framed as “five more things you shouldn’t do to your Glock,” based on recurring issues they keep seeing and hearing about from shooters and the broader gun community.
The conversation moves to the Glock 45, a Gen 5 pistol that has become very popular. The hosts note that many shooters consider Gen 5 the best refinement of the Glock design so far. A key feature highlighted is the true ambidextrous slide release. The slide can be locked to the rear and then released using the index finger on the right side of the frame, instead of only having a control on the left. They briefly address camera angles and safety concerns from viewers, clarifying that the muzzle is not actually flagging anyone, before returning to the technical discussion of the pistol’s updated controls.
They address a common mistake: trying to drop a customized Gen 3 or Gen 4 slide onto a Gen 5 frame, or otherwise mixing generations of Glock parts. Although some components appear similar in size, internal differences prevent proper function. Trigger housings differ between generations, with changes in shape at the rear. The Gen 5 slide is machined to accommodate the ambidextrous slide release, while earlier generations lack that cut. The safety plunger in a Gen 5 slide is more rounded compared to the more rectangular style in Gen 3 and Gen 4, affecting how parts interact. Extractor alignment is also different, so a Gen 4 slide does not line up correctly on a Gen 5 frame. They caution against wasting money assuming cross-compatibility that is not there.
With the introduction of the Glock 47, some shooters assume they now have a fully modular system and can freely swap slides and frames, such as putting a Glock 19 slide on a Glock 17 frame. The hosts warn that this mindset can lead to disappointment because the Glock ecosystem is not as modular as platforms like the SIG P320. While certain factory combinations are designed to work, many user-imagined mixes are not. They tie this back to the broader point that Glock generations and models have specific engineering behind their parts, and assuming universal interchangeability can create reliability and fitment problems.
The next topic is ammunition. They clarify there is nothing inherently wrong with inexpensive range ammo, including steel-cased options, if the gun runs it reliably. For practice, shooters can use whatever they can afford. However, they draw a clear line when it comes to defensive carry ammo. For situations where a Glock may be used to protect life, they recommend higher-quality loads and thorough function testing. They mention common 9mm bullet weights like 115 grain and 124 grain for FMJ, noting a personal preference for 124 grain, as well as heavier hollow points such as 147 grain. The key advice is not to load hollow points for the first time and immediately carry them without verifying that the pistol feeds and cycles that specific load without malfunctions.
They discuss the risks of poorly done handloads. The scenario described is someone reloading late at night, distracted by a game and alcohol, then taking those rounds to the range. This increases the chance of dangerous mistakes, including squib loads where a bullet lodges in the barrel. They reference a pop-culture example to illustrate how a squib can sound and feel different. Firing another round behind a stuck bullet can destroy the gun and injure the shooter. Even if the shooter escapes injury, the Glock is likely ruined. They stress that if an ammo-related malfunction occurs, that ammunition should not be reused. For range use, cheap ammo is acceptable, but for carry, quality and consistency matter, and safety must take priority over saving a few dollars.
The final segment focuses on DIY customization. They reference a viral “Glock 40 problem solver” video to illustrate how extreme modifications can create more problems than they solve. One example shown is a Glock that has had additional metal added and factory grip texture removed, resulting in a configuration that offers no real advantage. They acknowledge simple cosmetic work like spray painting a beat-up gun, provided internals are protected. However, they caution strongly against amateur slide milling, such as drilling and tapping for an optic or cutting windows without proper tools and experience. The hosts prefer sending slides to established shops like JagerWerks or DP Customs to ensure correct cuts. Removing too much metal and adding excessive ports or windows can reduce reliability. They stress researching parts and modifications so the pistol remains a functioning, dependable firearm rather than a compromised project.
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