Caliburn Mega Big Bore Nerf

https://youtu.be/uch5pNaQJ0k?si=l--Uc1Aanz0yYF_A

Caliburn Mega with a 1 5/8th piston and 1 7/8 OD tube diameter.

Tube https://www.amazon.com/dp/B0CYT9MJSD?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

127 size Orings for piston and ram https://www.mcmaster.com/9452K92/

3/8 4-40 screews https://www.mcmaster.com/90279A108/

4-40 nuts https://www.mcmaster.com/90480A005/

3 x 3ft line bars https://www.mcmaster.com/8975K297/

Pilot drill bit https://www.mcmaster.com/27995A654/

The sear needs an M3 X 8MM screw you only need 1 !!! They sell them at ACE. The Caliburn 4-40 is too long. Example https://www.mcmaster.com/92010A118/

I am not listing the normal Caliburn hardware you need.

I use a base 18 inch .777 barrel and Frontline Foam ram https://www.frontlinefoam.com/product/nerf-caliburn-aluminum-ramrod/

This blaster can actually flow a 24 inch barrel but an 18 inch is standard and works well.