StrangerDanger Posted December 24, 2016 Share Posted December 24, 2016 All - I have a user/client looking to remove the iron sights completely from the M4 and run strictly an optic. The rear is easy enough, but my question is about the front sight tower. Is this tower brazed or laser welded on? Anyone remove it for building SBS barrels from an 18.5"? Will it come off with high heat? The unit will be refinished afterwards. Quote Link to comment Share on other sites More sharing options...
AVATactical.com Posted December 24, 2016 Share Posted December 24, 2016 Interested in this topic. Obviously it can be done, see the 10.5"ish M4 SBSes out there, but I don't know how the surgery is accomplished. Quote Link to comment Share on other sites More sharing options...
NoTycoon Posted December 25, 2016 Share Posted December 25, 2016 I just removed the hardware and left the base. Does not interfere with my optic. It's the gun on the left. Quote Link to comment Share on other sites More sharing options...
StrangerDanger Posted December 25, 2016 Author Share Posted December 25, 2016 I would agree since it's a lot less permenant. Not my choice though. Quote Link to comment Share on other sites More sharing options...
Rasyad Posted February 15, 2017 Share Posted February 15, 2017 I used an oxy-acetylene torch to de-braze my M4 front sight. At first I thought I would be able to apply the heat to the top of the sight and watch the color change as it raidiated to toward the barrel. However, as you can see, the torch blew through the softer steel of the sight. Once I redirected the torch to the top of the base of the sight it went red and came right off. It only took about 10 seconds and the barrel did not seem to get very hot. I then used a fine file to remove the bits of Braze Welding material from the barrel and sanded smooth with 600 grit and 2000 grit paper. My plan is to cerakote once I decide on a color. Rasyad Quote Link to comment Share on other sites More sharing options...
StrangerDanger Posted February 15, 2017 Author Share Posted February 15, 2017 Wow. No going back from there! I hope it's giving you the sight picture you wanted. Quote Link to comment Share on other sites More sharing options...
Rasyad Posted February 15, 2017 Share Posted February 15, 2017 Yep, quite pleased by the outcome, no more chuncks of steel confusing the sight picture. Thanks, Rasyad Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted February 15, 2017 Share Posted February 15, 2017 and here I am comfortably shooting a T2 with my FSP up on an M4 carbine... To each their own. CAG isn't running BUIS on their LPV equipped carbines in many cases, so it's not like you're in bad company at least. Quote Link to comment Share on other sites More sharing options...
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