The HK 51001919 A4 Complete Upper Receiver Assembly 7.62x51mm Cold Hammer Forged Steel 13" is a testament to HK's engineering excellence. This upper receiver assembly is designed for those who demand precision and reliability. Featuring a 13" cold hammer forged steel barrel, this assembly is built to withstand rigorous use while maintaining accuracy.

Ideal for range use and training, the HK 51001919 A4 is equipped with a threaded barrel and an M-LOK handguard, offering versatility for various attachments. The adjustable gas block ensures optimal performance, making it a suitable choice for both novice and experienced shooters. HK's reputation for innovation and craftsmanship is evident in every detail of this upper receiver assembly.

Key Features:

• Manufacturer: HK
• Model: 51001919 A4
• Caliber: 7.62x51mm
• Barrel Length: 13"
• Threaded Barrel: Yes
• Handguard: M-LOK
• Gas Block: Adjustable
• Includes: Bolt Carrier Group, Buffer Weight, Buffer Spring