Posted: 8/18/2025 5:09:06 PM EDT
| I’m looking at the Brownells M4A1 RIS II upper assembly and would like to know the barrel profile. Is it the standard M4 profile or the Colt SOCOM barrel profile? |
| Joe already answered the question, but I should point out that the Brownell's uppers actually come with a proprietary DD SOCOM profile that is similar to the Colt SOCOM barrel, but lacks the cutout for an M203 clamp at the front. So it's not exactly the "Colt SOCOM barrel" on those uppers. |