Adjustable Nerf/Airsoft Rail Riser - 20mm Picatinny

thingiverse

<b>Notes:</b> This Adjustable Rail Riser is designed to angle your optics for Nerf, Airsoft, Gel Ball, etc. to account for projectile drop over long distances. It uses basic hardware, and ~30g of filament. The file "8pcRail2" has 8 spots over the previous 6, and is designed for mounting LPVOs. It has tighter tolerances for the nut, and much tighter walls, so it is a tight squeeze into the frame I have tested the 8pcrail with a "Firewolf 1-4x lpvo" from Aliexpress, and it fits fine. I wasn't able to test how much elevation is needed, as my caliburn hits over 300fps and the darts weren't dropping much in my short range. I'll do some more testing once I fix the caliburn, as it broke mid testing. This seems to hold a zero and not shake around too much. I will mark it as WIP as others are working on modifying/improving this, and you can too! <b>Hardware:</b> 1x M4 Locking Nut (nyloc) 3x M4 Nut 1x M4 Bolt 30mm (Can be longer, used for clamp/rail) 2x M4 Bolt 25mm (1 can be longer, one has to be 25mm) <b>Assembly:</b> 1. Print out all parts (nutshim isn't necessary) 2. Insert locking nut into the space in the rail piece, and screw a 25mm bolt into it. I used a screwdriver tip to hold the nut steady while doing so. 3. Insert the rail into the base and use another 25mm bolt through the pivot hole to hold it in place, with a nut on the end. 4. Remove supports from the hole in base (I used a screwdriver and flush cutters) and insert a nut, you can also put in 1 nut shim before and after the nut if you want, to center and hide it. 5. Screw the bolt with the nylock nut on it into the the nut in the base. The base nut should be captive and the nylock should spin freely, anchoring the rail to the bolt effectively. 6. When you loosen/tighten the bolt, it should raise/lower the rail. You might want to insert/glue a nutshim in front of the nut, to prevent it from coming out if unscrewed too far. <b>Why/How I designed this:</b> I designed this as I couldn't find any other files for adjustable rail risers like this, The silhouette is inspired by Foam Technician's Rail Riser, however their files are not public, nor do I know how their mechanism works. My holes for the nuts were designed around nuts I bought in Lidl, however these were not the same size as nut dimensions found online, with the nyloc nut being 1-2mm shorter. I have included my rsdoc files, stls, and a .step file, which is outdated. You can convert .rsdoc files to .sat, then import them into Solidworks, etc. and export them as .step files.