A couple of builds

[Belt Fed]

This one i done about a week ago 6.5 Grendel, Sharpes bros hellbreaker lower. Hawke 4x prism sight

[Belt Fed]

Other is a 7.62x39, another sharps bros lower. both have an Atrius FRT

Edited 16 hours ago by Belt Fed

[Belt Fed]

Also what in the heck is this metal made of. LOL, seriously i broke 7 drill bits trying to drill the gas hole out. none of them even started to cut and i just used the first one on that 7'62 barrel. i gave up and going to try the FRT like it is. it's a 14 inch 5.56 bear creek barrel. is it possible to over harden a barrel?

 

[shooterrex]

You just need to get through the nitride.

Like for dimpling for the gas block I use my drill press and a round burr.  Slow speed with a little oil and just keep at it. 

Also have used a center punch to mark the hole and used a dremil to grind a flat spot . then drilled with the drill press.

[Belt Fed]

1 minute ago, shooterrex said:

You just need to get through the nitride.

Like for dimpling for the gas block I use my drill press and a round burr.  Slow speed with a little oil and just keep at it. 

Also have used a center punch to mark the hole and used a dremil to grind a flat spot . then drilled with the drill press.

Thanks, i;ll have to get some more drill bits. i broke all i had that size.  I didn't use oil but went slow on the last four bits. lol but i will use oil next time. probably help to buy some better bits too.

[Albroswift]

I like the cobalt bits, buy once cry once. Goes through barrels like butter (well, not quite but close)