This Bolt Conversion Kit takes your marker and upgrades it to a Bolt Mag Fed Marker. This Tacamo magazine conversion kit, turns your hopper to mag fed and gives it the ability to upgrade to shoot Shaped Projectile, First Strike RoundsKey features:- Quick and easy maintenance for beginners and as a field rental- Standard Tippmann A-5 barrel threads are widely compatible- Compatible with electronic and response trigger frames for the Valken SW-1- Rear cap can be replaced with buttstock or a rear air system. (BT Delta collapsing stock needs modification to fit smoothly, does not fit perfectly out of the box)- Compatible with the most widely used paintball magazines: DMAG and Helix- Lok-Bolt Anti-chop Upgrade-able- Full-length Picatinny top rail and half-length dovetail rail - All necessary parts for conversion are included- Completely replaces the body panels of your marker- Retain the use of internal parts and most accessories- Opens up your field of view- Breathe new life into old designs- Takes you to a whole new level of tactical paintball!- Gets you on the field fast and doesn't break the bank!Package Includes:1 x Bolt marker body1 x Helix 20 round magazine1 x Helix loading rodThis Kit Can Be Used For:- BT-4 - BT Combat- BT Iron Horse- BT Omega- BT Delta- BT Erc- Valken SW1- Valken Black Hawk