eqracing Posted February 17, 2022 Share Posted February 17, 2022 (edited) I just wanted to give a shout out and a huge thank you to all of you who spend time to write and post instructions, reviews and answer basic questions. The first round of mods went extremely smooth! My new M4 Landed a few weeks ago and I spent an hour or so last weekend with the first group of upgrades. Need to get her out on the range next! Quick question - I noticed the front of the barrel around the site is slightly brown. Is this normal? I haven't tried cleaning it. Edited February 17, 2022 by Admin Removed incorrect image links. Quote Link to comment Share on other sites More sharing options...
eqracing Posted February 17, 2022 Author Share Posted February 17, 2022 Not sure why the photos are showing - 2nd attempt! 1 Quote Link to comment Share on other sites More sharing options...
Anon4755 Posted February 17, 2022 Share Posted February 17, 2022 Theres no brown around the front sight for my benelli m4. Quote Link to comment Share on other sites More sharing options...
StreetSweeper56 Posted February 18, 2022 Share Posted February 18, 2022 Possible cause... 5 Quote Link to comment Share on other sites More sharing options...
Anon4755 Posted February 18, 2022 Share Posted February 18, 2022 1 hour ago, StreetSweeper56 said: Possible cause... LOL Quote Link to comment Share on other sites More sharing options...
Nocturnalnature Posted February 18, 2022 Share Posted February 18, 2022 It's likely just where they soldered the front sight base onto the barrel before the phosphate finish. Quote Link to comment Share on other sites More sharing options...
SOCOMguy Posted February 18, 2022 Share Posted February 18, 2022 To facilitate soldering acid flux is used. If the flux is not completely washed away and the residual neutralized rust will result.... like brown rust. Joe B Quote Link to comment Share on other sites More sharing options...
Anon4755 Posted February 18, 2022 Share Posted February 18, 2022 2 hours ago, SOCOMguy said: To facilitate soldering acid flux is used. If the flux is not completely washed away and the residual neutralized rust will result.... like brown rust. Joe B Is it a bad thing if its appearing brown? Just curious. Quote Link to comment Share on other sites More sharing options...
D'zaster Posted February 19, 2022 Share Posted February 19, 2022 If it does not come off with a rag and breakfree or other oil/cleaner, I'd suggest calling Benelli tech support. Quote Link to comment Share on other sites More sharing options...
eqracing Posted February 19, 2022 Author Share Posted February 19, 2022 photos of the area Quote Link to comment Share on other sites More sharing options...
rubicon20032003 Posted February 19, 2022 Share Posted February 19, 2022 Man that looks bad.Sent it back to Benelli Quote Link to comment Share on other sites More sharing options...
SOCOMguy Posted February 19, 2022 Share Posted February 19, 2022 It sure looks like rust from acid soldering flux not having been properly removed and neutralized.... may even indicate an incomplete soldered joint. Joe B Quote Link to comment Share on other sites More sharing options...
StreetSweeper56 Posted February 19, 2022 Share Posted February 19, 2022 Yes, you should, at least, get a new barrel, that looks terrible. Quote Link to comment Share on other sites More sharing options...
eqracing Posted February 19, 2022 Author Share Posted February 19, 2022 Thanks for the info - I have reached out to them. 1 Quote Link to comment Share on other sites More sharing options...
Anon4755 Posted February 20, 2022 Share Posted February 20, 2022 9 hours ago, eqracing said: photos of the area On my bolt carrier, the tail piece has that exact brown looking stuff on the top of it on the very back in the center. I didnt think anything of it until you pointed that out on your barrel. Quote Link to comment Share on other sites More sharing options...
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