This is an adapter that allows you to attach two 1 inch PVC pipes to the front of your Nerf Retaliator. This then allows you to take the pump grip, barrel bracket and orange tip files from my Mega Magnus shotgun kit and use them on a Retaliator.
I designed this adapter to be compatible with all versions of the Recon and Retaliator but have also received confirmation that it works with the Delta Trooper.
I believe it could also be used with the following blasters but you may need to be creative in order to connect the pump grip to the appropriate priming location.
Edit January 24, 2019:
Modular pump grips available here!
I'm plan on detailing the changes I make here. Once Hopefully through jolly cooperation we can get this part fitting nice and snug!
After taking some more measurements of the barrel attachment point I found that the dimensions vary. I mistakenly measured the narrowest part initially and think the my adapter might be too tight to fit. I increase the ID of where the barrel attachment point inserts into the the adapter. I also adjusted the two little teeth to match.
A friend printed the part and found that it could not rotate around the barrel attachment enough for the adapter to be upright. In this file I narrowed the little teeth/notches that lock onto the barrel attachment. This should let the adapter rotate a little bit more.
I mistakenly made the spacing between the upper and lower barrels 1mm too tight. This led to the gap between the barrels becoming a little tighter towards the rear. With this version of the adapter the barrels should now run parallel.
This rear portion of the grip has the bolt holes in the back raise up 4mm so they line up with the mounting location on the Retaliator's bolt sled. This should make your priming bars parallel to the barrels. The front half of the pump grip is the same as the one in the Magnus pump kit.
if you managed to dowload nerf_retaliatorShotgunRearGrip_v1.STL in the brief moment it was up, do not print it. The pockets for the M4 nuts are too shallow and will gouge your barrel