Turn your Rival Knockout Pistol to Stefan darts Canon! This kit included a 12KG spring that make your dart shooting extra fun. What more than internal mod, this kit include a tactical handguard that holds 5 darts and a big muzzle that fit well to the big pistol.

Brass breech modding is popular in nerf mod community for its stefan darts compatibillity and excellent air seal along the plunger and barrel system. The flexibility on brass cutting give an engineering sense on the relationship between chamber size, spring loading as well as the barrel length.

This brass breech make up with K&S #8140 and #8141 brass tube and cut precisely with CNC wire cutting. We have redesiged the adaptor that fit well with the brass breech and the original plunger chamber, printed solidly to make it in strong body to allow strong spring upto 12KG. Addition printed fixture included allow you to hold the barrel at the front muzzle.

Nerfer need to have an advance knowledge on Nerf modding, and basic knowledge on brass breech modding. Instant adhesive glue needed to glue the printed bolt with the brass bolt tube, glue needed as well on the breech tube to the fixture and stock muzzle. Precise measurement and trial needed to set the position of the bolt tube and barrel tube, to ensure excellent air seal and fitting along the plunger to barrel system.

Becareful when handling this brass breech, sharp edge may raise cutting hand issue.

This kit contain the following parts:

AK MOD Stefan Brass Breech Printed Bolt Kit for Nerf Rival Knockout
AK MOD Printed Breech Load Thumb Extension for Nerf Rival Knockout
AK MOD Print Handle Guard Stefan Dart Holder for Nerf Rival Knockout
Worker MOD 12KG Spring Coil for Nerf Rival Knockout
Worker MOD Plastic Muzzle

AK MOD Stefan Brass Breech Tactical 12KG Kit for Nerf Rival Knockout Modify Toy

  • Barrel Size (L, mm): 175mm
    Weight (g): 240
    Color: Brass / Black
    Material: Brass / PLA
    Fomation: CNC Machining / 3D Printing
    Packing: Carton Box
    Packing Size (LxWxH, mm): 200 x 80 x 60


Address: Room 1203, 12/F.,
Siu Wai Industrial Centre,
29 Wing Hong Street, LCK,
Kowloon, Hong Kong
Tel: (852) 2805 1339
email:  akblastermod@gmail.com

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