What Happens When You Combine an MP5 with a Glock-mag AR-15? The Angstadt MDP-9

The Angstadt Arms MDP-9 is a 9mm roller-delayed blowback carbine that blends MP5 mechanics with AR-15 ergonomics. It offers reduced recoil compared to simple blowback PCCs and accepts Glock magazines. While featuring a modular design and a compact form factor, its last-round bolt hold-open can be inconsistent, and the trigger and safety are noted as minor drawbacks.

This InRange TV video features a review of the Angstadt Arms MDP-9, highlighting its unique design that combines the MP5's delayed roller blowback system with AR-15 ergonomics and Glock magazine compatibility. The reviewer also touches upon the SAS push/pull sling method used during the Iranian Embassy Siege. The video focuses on the technical aspects and practical application of the firearm.

The Angstadt MDP-9 and H&K SP-5, both roller-delayed 9mm firearms, were compared in a timed range test. Despite the MDP-9's lighter weight and faster average time (26.81s vs 23.72s for SP-5 on later runs), it suffered a significant double-feed malfunction. The MDP-9 also exhibited minimal gas blowback when suppressed, a plus for left-handed shooters, but its trigger, lack of ambidextrous safety, and unreliable bolt hold open were noted as drawbacks.

This video pits different AR-9 platforms against each other to determine which one performs best. The title explicitly mentions "Battle of the AR-9" and asks "Which One Shoots Best?", indicating a comparative review focused on the performance of AR-9 style firearms. The description directs viewers to various other channels and social media platforms associated with Classic Firearms, suggesting this is a content piece from a firearms-focused entity.

This YouTube video showcases an AR-9 firearm paired with a SilencerCo Omega 9K suppressor. The title suggests a focus on the integration and potentially the performance of this specific AR pistol caliber carbine (PCC) setup. It's likely to explore aspects such as shooting characteristics, sound suppression, and possibly the overall functionality of the AR-9 platform when utilizing a high-quality suppressor like the Omega 9K.

Elliott Delp provides an expert overview of the PSA Gen-4 GX AR-9 PDW, highlighting its compact and reliable nature. He specifically notes its 9mm caliber and compatibility with Glock magazines, making it a noteworthy option for those seeking a versatile firearm. The instruction is delivered with the authority of an experienced firearms instructor.

This TFBTV episode identifies the top 5 most reliable firearms across different categories: Glock (handgun), Uzi (SMG), Mauser 98 (bolt-action), Remington 870 (shotgun), and Galil (self-loading rifle). The selections prioritize mechanical simplicity, proven track records, and resilience in harsh conditions, often outperforming more complex designs. The video highlights specific features contributing to their reliability, such as the Uzi's single moving part and the Galil's robust construction.

This review highlights five hilariously impractical firearms for concealed carry. It details the slow, complex loading of black powder firearms, the impractical size of the Mauser C96 and full-size .22 pistols for concealment, and the dangerous accidental discharge flaw in the Type 94 Nambu. The video emphasizes that while historically significant, these guns are unsuitable for modern self-defense.

The Ruger Mini-14 offers distinct advantages over the AR-15, including a lower profile, better stock trigger on modern variants, superior maneuverability with folding stocks, a longer sight radius, and a cleaner piston operating system. Modern Mini-14s also boast improved accuracy (around 2 MOA), cold hammer-forged barrels for durability, and optional all-stainless construction for corrosion resistance. While the AR-15 remains more modular and generally cheaper, the Mini-14 excels in specific areas.

This TFBTV episode reviews five excellent surplus rifles available for under $500, focusing on historical significance and affordability. Featured firearms include the Lee Enfield, Yugoslavian Mauser 98, Swiss K31, MAS 49/56, and a debate between the SKS and Mosin Nagant for the final spot. The discussion highlights unique actions, historical context, and the availability of surplus ammunition.