Videos tagged with Bolt Carrier Group Inspection

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 demonstrates an inspection of a PSA M16 Phosphate/Chrome BCG using a reject gauge. The BCG fails the gauge test, indicating dimensional issues that could lead to premature wear or cracking. A Microbest BCG is shown for comparison, which passes the gauge test.

This video addresses common issues found in two KAK bolt carrier groups (BCGs), specifically focusing on damaged extractor pivot pins. The instructor demonstrates how rolled-over pins prevent proper extractor function and require replacement. Additionally, rough surface finishes in the carrier key tunnel bore are highlighted as potential causes of premature wear and cycling issues.

This video provides an in-depth inspection of a KAK K-SPEC Bolt Carrier Group (BCG), highlighting two primary areas of concern: the surface finish of the sand-cut rails and the design of the dual ejectors. The instructor details how rough rails can aggressively wear an upper receiver's finish and how concave ejectors can cause excessive friction and brass deformation. The video serves as a teaching moment on critical inspection points for BCGs.

This video demonstrates a critical quality control check for AR-15 bolt carrier groups, specifically focusing on the fitment of the carrier key. Instructor shows how to use a Go gauge or a gas tube to verify that the carrier key's opening is within tolerance. A significant failure rate was observed in the tested batch, highlighting the importance of this inspection for reliable firearm function.

This video provides a detailed, expert-level inspection of a Sons of Liberty Gunworks Bolt Carrier Group (BCG). The instructor, a certified Sons of Liberty armoror, walks through numerous tests including gas ring functionality, bolt component integrity, dimensional checks with gauges, magnetic particle inspection, and a critical magazine binding test. The analysis emphasizes the importance of these checks for reliability and longevity, highlighting specific features like the five-coil extractor spring and chrome silicone ejector spring.

This video provides an in-depth physical inspection of a Knight's Armament SR-15 Mod 2 rifle, highlighting its unique design features and proprietary components. The instructor demonstrates specialized tools and techniques required for working on KAC firearms, emphasizing differences from standard AR-15 platforms. Key areas covered include the bolt and barrel extension design, gas system, ambidextrous lower receiver, bolt carrier group specifics, and various dimensional checks for headspace, throat erosion, and alignment.

This comprehensive guide details an in-depth autopsy of an AR-15 upper receiver and a SOLGW Scalper Bolt Carrier Group (BCG) to diagnose potential corrosion issues. The process involves detailed visual inspection, borescoping the barrel, and extensive gauging of BCG components. Key findings include worn gas rings, minor pitting on the bolt face, and potential light corrosion in the barrel's rifling, likely stemming from ammunition or environmental factors. The guide emphasizes thorough cleaning and inspection to ensure firearm reliability and longevity.

This video provides an expert-level review of the Palmetto State Armory AK AKE, featuring rigorous stress tests like the 'sand tornado' and long-range accuracy checks at 400 yards. Instructor Rob Ski, a recognized AK platform expert, conducts detailed internal inspections and safety checks, concluding the rifle sets a new performance benchmark.

This guide details the field stripping and inspection of the Diamondback DB10 rifle, chambered in .308 Win. It covers disassembly, examination of critical components like the bolt carrier group and receiver reinforcements, and checks of furniture and barrel features. The process is presented with a high degree of authority, reflecting an experienced reviewer's practical approach to firearm maintenance and assessment.

This review details the performance of a Radical Firearms AR-15 after enduring 3000 rounds, including a challenging 1500-round sand tornado test. The rifle demonstrated surprising durability and reliability, with zero malfunctions during the sand test and impressive accuracy at 600 yards. However, the review highlights the difficulty in cleaning an AR-15 after such abrasive conditions compared to an AK platform, emphasizing the need for compressed air. The inspection of internal components revealed no significant deformation or damage, suggesting a solid build for a budget-friendly rifle.