This video from Tactical Considerations discusses problems encountered with the lower receiver and magazine well of a Daniel Defense M4A1 RIS 3 rifle. Issues identified include an undersized and unsquare magazine well, a right-side feed ramp overhang, and a weak hammer spring. An update notes that Daniel Defense replaced the entire firearm for the owner. The video focuses on troubleshooting and potential manufacturing defects.
The video creator expresses significant disappointment with their Colt Mark IV Government .380 pistol after experiencing persistent malfunctions despite replacing magazine springs, recoil spring, and trigger spring, and putting over 300 rounds through it. They are considering selling the firearm and are seeking advice from the community. Potential future modifications like polishing the chamber and opening the feed ramp are mentioned as last resorts before giving up on the gun.
This video explores the concept of tolerance stacking, specifically as it relates to issues with M4 feed ramps. It provides a practical example of how slight variations in manufacturing tolerances can accumulate, potentially leading to feeding problems in firearms. The analysis focuses on the mechanics and potential causes of such malfunctions, highlighting the importance of precise manufacturing in firearm reliability.
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