Vortex Defender ST Enclosed - most correct enclosed window size

This guide covers the installation and basic use of the Osight SE green dot optic, as demonstrated by an experienced instructor. It highlights the optic's RMSc footprint, user-replaceable battery, and versatile reticle options (2 MOA dot, 32 MOA circle, or combination). The video also compares the green and red reticle variants, noting their identical functionality aside from color.

This video provides an enthusiastic overview of the Vortex Defender ST Enclosed optic, presented by an enthusiast reviewer. Key features highlighted include its fully enclosed design, tint-free lens, textured slide racking surface, and tactile buttons. Pricing and battery information are also discussed, positioning it as a notable option for 2026.

This review of the Gowutar GP-9 optic highlights its 6 MOA red dot, which is particularly beneficial for individuals with astigmatism, often appearing crisp and round. The optic features a large window, beneficial for rapid fire and recoil management, and includes built-in rear sights for backup. The video demonstrates the zeroing process at close range and discusses the practical application of the 6 MOA dot's size at various distances.

This video provides a practical guide to zeroing and adjusting the Olight O-Sight XR red dot sight on a Beretta PX4 Storm. The speaker highlights the ease of use, the effectiveness of the adjustment screws, and the utility of the integrated pop-up sights. It's presented as a viable, cost-effective alternative to other fully enclosed red dot platforms.

The video argues that the Trijicon RMR is 'mid' compared to newer optics, citing significant parallax error at 25 yards. It highlights the Osite SE and Vortex Defender ST as superior alternatives with much less parallax shift, even on budget options. The speaker suggests the RMR's reputation for durability is comparable to older, less advanced vehicles.

This review covers the Olight XR RMR-style red dot sight, highlighting its unique multi-reticle system with switchable 2 MOA and 6 MOA dots, and a 32 MOA ring. The optic features an RMR footprint, integrated backup sights, and a novel external battery pack for recharging. The reviewer demonstrates its mounting on a pistol slide, discusses its performance with astigmatism, and provides a range session showing the zeroing process.

This guide details a practical experiment to debunk the myth that an AR-15 round would 'blow off' an ear. The Humble Marksman demonstrates through testing with pig ears that common rifle rounds, and even heavier calibers, create clean holes rather than explosive damage on thin tissue. The expert's analysis highlights the difference between tissue interaction and ballistics gel cavitation.

This guide showcases the specialized 'Space Guns' used in Open Division competition at the Double Tap Championship. It highlights custom 2011 pistols, advanced optics like C-More RTS2 and Sig Sauer Romeo3 Max, and high-end holsters from Safariland and Double Alpha Academy. The content, presented by a seasoned competition shooter, offers insights into the gear and techniques employed in high-level shooting events.

This guide details an efficient iron sight technique, drawing on insights from 3-division USPSA Grand Master Tim Herron. It emphasizes a shift from rigid front sight focus to a more effective target-oriented approach, using the rear sight for gross aiming and the front sight for fine-tuning. This method is particularly beneficial for shooters transitioning from red dot sights.

This guide details the disassembly process for three popular 2011-style pistols: the Staccato P, Springfield Armory Prodigy, and Bul Armory SAS II Tac 4.25. It highlights differences in guide rod systems, with the Staccato P featuring a toolless system, the Bul Armory requiring a paperclip or staple, and the Springfield Armory Prodigy needing a hex wrench. Proper maintenance of the guide rod system is crucial for reliable firearm function.