Expert Review Functional with subsonic and supersonic 300 blackout loads, basic blaster, good performer - TRYBE Defense AR-15 .300 Blackout Upper Receiver

I have this upper to shoot all .300 BLK ammo. I got the complete upper with basic black nitride coating and A2 bird cage. Shoots sub and supersonic loads interchangeably without a hiccup. Solid handguard with M-Lok slots for accessories. This upper has installed on it the TRYBE DIMA/LEO scope/rangefinder combination and it's the perfect sighting instrument to use with the rainbow trajectory of slow subsonics. I love the versatile .300 BLK cartridge and it was the best way to get into an reliable upper without breaking the bank. I keep my nitride guns on the wet side and recommend we all do. I've found no extraordinary BCG wear during cleanings, everything looks happy. Good solid performer to blast this great modern little 30 caliber cartridge.