This video provides an installation guide for the Magpul UBR (Utility Battle Rifle) buttstock for AR-15 and M16 platforms. It highlights the stock's reinforced polymer construction, adjustable length of pull with a preset system, and integrated features like sling mounts and a storage compartment. The guide also notes the necessity of an M4 carbine buffer and action spring for A1/A2 style fixed stock conversions.
This video from Brownells details the components and installation process for AR-15/M16 buttstock mounting kits. It covers A1, A2 rifle kits, and both Milspec and Commercial carbine kits, highlighting the specific parts included in each. The kits provide original factory parts to securely mount a chosen buttstock, simplifying the build process by eliminating the need to source individual components.
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