Taken off my carbine Sig Sauer MPX gen2. Has 1/2-28 threads from the factory. I've removed the existing pin and welded muzzle device from sig so the threads are exposed.
Looking for $350 for the barrel and complete gasblock. I'll throw in the factory keymod 16" receiver for $70 if you buy the barrel.
Looking for $350 for the barrel and complete gasblock. I'll throw in the factory keymod 16" receiver for $70 if you buy the barrel.