Brian has been taking a look at the APS M4 gearbox for Team Blacksheep:
In this video Brian will take apart the APS M4 SD in a step by step guide and put it all back together. This is a current and standard APS M4/M16 so it will help you out with all the other APS M4 rifles out on the market now.
Make sure you LIKE- COMMENT – SUBSCRIBE and SHARE with your friends that need to see this video.More videos in our GEARBOX WORKS Playlist
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