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YHM Resonator 300 BLK Integral Upper

Skip the SBR headache; this upper ships with a Resonator suppressor permanently pinned to a 9.1-inch barrel, giving a legal 23.5-inch overall length and requiring just one tax stamp. The unit weighs 4.38 lbs complete and keeps sub-sonic .300 BLK to a quiet 127 dB, full-auto rated. A 10-inch MR7 M-LOK handguard, YHM A3 receiver, low-blowback gas block, and black-plated gas tube come installed; simply add your bolt-carrier group and charging handle. Compatible with all standard lowers, it is an out-of-the-box solution for hunting, defense, or range fun with zero barrel-length limits.

Quick Hits

23.5 in OAL - 4.38 lbs - 1.56 in diameter
127 dB sub-sonic - full-auto rated
9.1 in barrel pinned/welded - one stamp
10 in MR7 M-LOK handguard and A3 upper included
BCG and charging handle not included