Videos tagged with Bolt Inspection

This video provides an expert-level review of the Knight's Armament KS-1 and KS-3 rifles, recently adopted by the British Ministry of Defence. Instructor Garand Thumb, with extensive special operations experience, details the rifles' technical specifications, performance on the range, and innovative design features. The review highlights the rifles' superior gas management, barrel longevity, and the advanced E3.2 bolt system, offering insights into why these high-tier American platforms were chosen over competitors in the UK's 'Project Hunter' trials.

This guide details the inspection of an AR-15 bolt carrier group (BCG) after extensive use, focusing on identifying wear and potential failure points. It covers checking the bolt, gas rings, extractor, firing pin, and bolt carrier for stress fractures, damage, and carbon buildup. The video emphasizes that parts wear out over time and regular inspection is crucial for maintaining reliability, especially after high round counts exceeding 30,000 rounds.

This video provides a detailed physical inspection of an AIM Surplus Bolt Carrier Group (BCG). The instructor, from School of the American Rifle, meticulously disassembles the BCG, checks for proper fit and function of components like the firing pin, cam pin, gas rings, and extractor. The inspection includes checks for magnetism, bolt protrusion, headspace, and a borescope examination of the carrier's three-bore. While generally positive, the review highlights a minor machining inconsistency in the carrier's rear three-bore, potentially affecting gas efficiency.

This video provides a detailed autopsy of a Knights Armament Sandcutter AR Bolt Carrier Group (BCG) that was causing reliability issues. The instructor systematically disassembles and inspects each component, including the bolt, extractor, firing pin, cam pin, and carrier bore, using various gauges and tools to identify potential problems. The primary finding is a broken gas key fastener, which is identified as the cause of gas leakage and the firearm's failure to cycle.

This video details the inspection and cleaning of an AR-15 bolt carrier group after 6,000 rounds, focusing on the durability of a Young Manufacturing HMB bolt and a Ballistic Advantage barrel. The presenter uses a borescope to examine internal components and discusses wear patterns on the bolt, carrier, extractor, and firing pin, highlighting the HMB bolt's design for increased strength. The process includes cleaning with an ultrasonic cleaner and a nylon brush, emphasizing that internal parts, while showing some wear, remain functional.

This video provides an in-depth review of the Arsenal SLR107R (107-11) after 2000 rounds, focusing on its durability and performance. The presenter, an experienced firearms instructor, details the results of various stress tests, including concrete drops and extensive firing, assessing component wear and overall reliability. The review highlights the rifle's robust construction and the performance of its components under demanding conditions.

This video details the post-1000 round inspection of a DDI Hammer Forged AK47S, focusing on the critical failure of the original extractor. The presenter demonstrates the process of replacing the extractor and bolt, and crucially, performs a headspacing test with new DDI bolts to verify their 'drop-in' claim. The inspection reveals wear on the trunnion and bolt carrier, but the new extractor and bolts appear to be holding up well, with headspacing confirmed as correct on new components.

This review details the performance of a WBP AKM rifle after firing 2,000 rounds. The expert instructor from AK Operators Union conducted extensive testing, including rapid fire and stress simulations, to assess durability. Key findings include minor wear on the bolt and a loose magazine catch rivet, but overall positive performance of the cold hammer-forged barrel and receiver components.