Uploaded December 2016 | Updated September 2026, 6 days ago

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Hi guys, here I look at UAC's Lightweight Aluminium Bolt Carrier for the TM M4 MWS GBBR. This is a great upgrade for competition shooters looking to increase rate of fire and also GBBR war gamers who want to continue to use their TM MWS during the winter months.

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Installation guide: youtube.com/watch?v=ZPSeUzRc688