Sapien Arms 6.03mm M4 / M4A1 / SG551 Tightbore Barrel - 363mm

Product Code:
Customers Who Bought This Item Also Bought

    Our take:  The Sapien Arms performance 6.03mm series of tightbore barrels are the newest tightbores out on the market.  They feature a heavy metal Ni (nickel) coating for high lubricity and performance, and increase performance (power) an average of 15% with installation.

    The super slick Heavy Metal Nickel Finish strengthens and protects the barrel, while reducing friction (conserves velocity & back spin).  This 363mm barrel fits most M4 / M4A1 Carbine / SG551 metal gearbox AEGs.

    Precision manufactured in the USA, each barrel is HAND TESTED for tolerance and to ensure quality.

    Note:  Ready to use right out of the box, though professional installation is recommended/may be required.  Please use only ultra high-quality precision seamless BBs in your gun after installing this barrel, as inferior grade BBs (i.e. BBs from sporting goods stores) WILL jam inside this barrel.

    Sapien Arms 6.03mm M4 / M4A1 / SG551 Tightbore Barrel - 363mm Categories:

    Write A Review

    • Please do not use the review feature to ask questions. Any reviews containing questions will not be answered, and will be deleted
    • Please keep your review clean of obscenities and other distasteful content
    • Please be detailed in your review, and talk about what you like/dislike about this product
    • Click here to review submission guidelines.

    No one has reviewed this product yet, why don't you be the first?

    Get exclusive deals & insider tips:


    Call Our Support Team:

    (818) 495-6502