This video reviews the Maxim Defense AR9 roller delayed buffer system, designed to bring MP5-style roller delay to AR-15 platform 9mm carbines. The system aims to significantly reduce felt recoil and sight picture disruption by delaying bolt unlock and reducing reciprocating mass. Installation involves replacing the standard buffer and spring with the integrated roller system and removing weight from the BCG. Both reviewers found the system dramatically improved handling and reduced recoil, making the 9mm PCC feel more like a 5.56 carbine.
This video compares the CZ Scorpion EVO 3 to the new Scorpion 3+ to help owners decide if an upgrade is warranted. Key differences highlighted include the 3+'s lighter polymer lower receiver, improved safety selector, redesigned grip, AR-15 style ambidextrous magazine release, relocated bolt release, and higher sights. The speaker notes that while new magazines are required for the 3+, a simple modification to older magazines will likely be available soon, making them compatible.
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