H&K 235975A5 Complete Upper 223 Rem/5.56 NATO 16 in 4140 Steel Black Brl Finish
This kit has been designed and manufactured to Heckler & Koch's exacting standards of excellence and is intended for use in, and with, MIL standard buffer tubes, as are rovided with the HK MR556A1 rifle. Due to the precise nature of the components of this kit, they must be installed as a complete kit to ensure proper operation. The MR556A1 pper Receiver Kit (URK) consists of an MR556A1 upper receiver/barrel assembly, complete bolt mechanism, and buffer and action (recoil) spring. The MR556A1 Upper eceiver Kit is designed to be fully interchangeable with most high quality AR-style firearms. MR556A1 upper receiver kits can be used to retrofit many non-HK AR systems y replacing the aforementioned components with MR556A1 URK components.
SPECIFICATIONS:
Mfg Item Num: 235975A5
Category: UPPERS
Type :A1 Upper Receiver
Caliber :223 Remington/5.56 NATO
Sights :None
Barrel Length :16 in
Barrel Material :4140 Steel
Twist :
Barrel Description :
Barrel Finish :Black
Receiver Description:Flat Top
Receiver Finish :Black
