This polymer replacement part is displayed as part number 126-395 on KM4 series diagrams and functions as the inner barrel through which the bb travels.
KWA KM4 and RM4 Series Enhanced Semi-Tightbore 395mm 6.05mm Brass Inner Barrel (Part 0126-395)
$35.00
The KWA KM4 and RM4 Series semi-tightbore 395mm 6.05mm brass inner barrel is made of the highest quality material and is meticulously crafted to precise specifications. With this inner barrel, you can customize your KM4 or RM4 Series rifle to be field or CQB ready!
Although this barrel is the stock inner barrel for the KM4A1, KM4 RIS, and CQR MOD 1, it can be used in any KM4 or RM4 Series rifle! Customize your KM4 or RM4 with our large selection of rail systems and outer barrels. The possibilities are endless!
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