![Harman Kardon® Announces HK 3770 and HK 3700 Stereo Receivers with Wireless Connectivity for Analog and Mobile Devices | HARMAN Harman Kardon® Announces HK 3770 and HK 3700 Stereo Receivers with Wireless Connectivity for Analog and Mobile Devices | HARMAN](https://s3.amazonaws.com/cms.ipressroom.com/214/files/20150/55414df3f6091d5fbf00005a_HK3770/HK3770_mid.jpg)
Harman Kardon® Announces HK 3770 and HK 3700 Stereo Receivers with Wireless Connectivity for Analog and Mobile Devices | HARMAN
![Harman Kardon HK-3385 Stereo Receiver w/ Dual Subwoofer Outputs, iPod Connectivity , AM/FM Tuner #2077 - USED | Reverb Harman Kardon HK-3385 Stereo Receiver w/ Dual Subwoofer Outputs, iPod Connectivity , AM/FM Tuner #2077 - USED | Reverb](https://rvb-img.reverb.com/image/upload/s--PQTG7nMZ--/f_auto,t_large/v1625170121/mj1zjuqa7cr7jv29toyd.jpg)
Harman Kardon HK-3385 Stereo Receiver w/ Dual Subwoofer Outputs, iPod Connectivity , AM/FM Tuner #2077 - USED | Reverb
Original OEM HK 416A5 RAL Upper Receiver with forward assist and Geissele DDC Charging Handle | HKPRO Forums
![HK MR556 16.5 MLOK Upper Receiver Kit, New in Box, German Heckler and Koch, MLOK, 642230262607, HKK-81000584, RTG Parts HK MR556 16.5 MLOK Upper Receiver Kit, New in Box, German Heckler and Koch, MLOK, 642230262607, HKK-81000584, RTG Parts](https://www.robertrtg.com/store/pc/catalog/_w6a0060_556_detail.jpg)