How-to short: Bore out the Bolt Rifle barrel & muzzle break for Primaris Space Marines (WH40K) - YouTube
I'm always being told drill the end of your bolter, and I have started doing that, but dose anyone also drill the air holes on the bolters barrel.... : r/Warhammer40k
Warhammer 40k Tau Bits Fire Warriors Pulse Rifle Carbine Blaster w/Arms x10 | eBay