Yes, this brake should fit that rifle.
We do not currently have a QD muzzle device with the thread pitch of the KR-103 muzzle. However the muzzle device at the link below should work.
https://www.opticsplanet.com/spikes-sakd14m-dynacomp-ak-7-62mm-416-stainless-black-melonite-14x1-lh-thread.html?_iv_threads-per-inch=m24x1-dot-5&_iv_code=2A8-BMB-SAKD14M-SAKD24M
No, this DEADAIR DA102 Muzzle Brake uses 5/8x24 threads while your KR-103 is threaded 24mm x 1.5mm RH.
No, the DEADAIR DA102 7.62 Muzzle Brake is not compatible with your PSAK-47 GF5. You need a muzzle device with M14x1 LH threads, not 5/8x24.
Yes, the DEADAIR DA102 7.62 MUZZLE BRAKE can be used with a firearm chambered in 300 Blackout. Just ensure your barrel is threaded for 5/8x24.
Yes. The DEADAIR DA102 7.62 MUZZLE BRAKE will fit on your Galil ACE.
The DEADAIR DA102 7.62 MUZZLE BRAKE will not fit your PSA AK-P. Your thread pitch is M24x1.5 RH.
The DEADAIR 7.62 Muzzle Brake is compatible with the Sandman-L, Sandman-S, Sandman-K, or KeyMo equipped Nomad-30 or Primal. You can still employ the DeadAir Muzzle brake and experience a flatter shooting rifle with minimal concussion compared to traditional muzzle brakes.
The thread pitch is 5/8x24.
Yes. This is standard 5/8 x 24 thread pitch for 7.62/.30 caliber.