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Buffer tube question

Discussion in 'Black Rifle Forum' started by Cole125, Nov 2, 2011.

  1. Cole125

    Cole125 Silver Member

    Apr 5, 2008
    Far West, USA
    Gentlemen, quick question here.

    I have a CMMG M4 carbine and I would like to get a complete 20 inch DMPS upper with a Nikon M-223 so I can swap the uppers to do long range shooting. Question is, will the 20 inch upper with rifle length gas tube function properly with the carbine buffer tube?

    This is the upper I want to get:
  2. WoodenPlank

    WoodenPlank Who?

    May 15, 2010
    NW Florida
    Should work fine. I have done it before with an 18" barrel with rifle gas system, no issues.