Questions, Answered #7.....Headspace

This expert-level guide, presented by Ian McCollum of Forgotten Weapons, details the critical dangers of amateur headspace adjustments on an AK-type rifle. The video highlights how grinding down locking lugs, evidenced by visible tool marks on the bolt and barrel, creates an extremely unsafe condition. It serves as a stark warning against improper gunsmithing techniques that can lead to catastrophic firearm failure.

This video from Iraqveteran8888 focuses on "Headspace," a critical firearm term. While the description is brief, it highlights the educational nature of the content, likely explaining what headspace is, its importance in firearm function, and potential issues related to it. Links to their educational institute (SDI), Amazon store, Patreon, USCCA, and website suggest a comprehensive approach to firearm knowledge and community engagement. The video is intended for documentary, educational, and entertainment purposes, emphasizing safe practices on approved ranges.

This video details how to properly check AR-15 headspace using go and no-go gauges. It emphasizes checking headspace for new builds, part replacements, or used firearms to ensure safety and function. The process involves stripping the bolt, cleaning components, and testing with gauges, noting that the bolt should lock with a go gauge but not with a no-go gauge.

This Brownells Tech Tip video features gun tech Steve Ostrem explaining how to check headspace on several popular bolt-action rifles. The video aims to provide practical knowledge for rifle owners and gunsmiths, focusing on a crucial aspect of firearm safety and function. The description links to additional resources on the Brownells website for further learning.

This video showcases a 7.62x54R Mosin action being tested on a stand. The description emphasizes that the content is for educational purposes and not a tutorial, warning viewers against attempting such procedures without the necessary skills. It features a strong disclaimer about safety and skill requirements. The title also humorously references a common Soviet sentiment: "Nyet! Weapon is fine!". The music used is titled "7.62x54r Sound of Soviets".

This video, part 2 of a 4-part series, focuses on the Bolt Carrier Groups (BCG) of a Ruger AR556. Despite audio issues that prevented reshooting, the analysis details several mechanical problems found within the BCG. These include misaligned carrier keys, issues with YFS carrier key screws, rough runs in the carrier for the bolt tail and support, and inefficient gas ring runs. The bolt itself exhibits magnetization, damaged tails, and undersized firing pin runs, leading to sticky firing pins and potential headspace issues. The video also previews a forthcoming discussion on carrier binding with PMags in part 3.

This video details a complex gunsmithing process to convert a rare Peabody Rifle from its original 11.15 Romanian Beaumont chambering to .45-70 Government using a sleeve from a Swiss Vetterli barrel. The conversion involves extensive machining of the barrel and breech block, fitting a new extractor, and carefully modifying the chamber for reliable feeding. Crucially, the modification is deemed safe only for black powder loads due to significant thinning of the breech block.

This video details the conservation-focused restoration of a severely flood-damaged Mauser K98. Mark Novak emphasizes preserving original finish over aggressive cleaning, using techniques like rust conversion boiling and careful scraping. Key steps include disassembling the rifle, treating rust with boiling and carding, steaming dents from the wood, and repairing the handguard with polyurethane glue.

This video provides a practical, live-fire demonstration of the 1918 Chauchat light machine gun, focusing on its unique long-recoil action. Mark Novak showcases the weapon's cycling in slow-motion, highlighting the reciprocating barrel and bolt assembly. The demonstration emphasizes the historical significance and operational mechanics of this WWI-era firearm.

This video details the conservation of a barn-found LC Smith 20 Gauge shotgun. Mark Novak demonstrates critical steps including barrel solder testing, proper disassembly with fitted tools, and analysis of the stock's inherent weaknesses. The conservation process involves boiling metal parts to convert rust to black oxide and treating the wood with oil, followed by meticulous reassembly and a successful test fire.