QB78 or QB79 breech riser kits ***SOLD***

[AustinBinTX]

All Sold - Thanks GTA

3D printed breech riser kits for QB78s, AR2078s, QB79s, and AR2079s.

Printed from extremely tough PETG.

These raise the breech of your QB78 or QB79 by 1/4”. This will allow you enough room to fit a full length 1” diameter shroud.


Easy installation. No extra parts to buy.


All hardware is provided, including extended hardened cocking pins.


Due to slight differences in rifles, the poly tube transfer port material will need to be cut to length. There is plenty extra. If you have other QBs it can be used on them as well.

$20 plus whichever form shipping you want.

PayPal payment preferred.

PM me or email me at Austin