Snowpeak AP900/ 1000/ Air Venturi Alpha Modular Forend

This a modular forend for the popular Snowpeak AP900/ 1000 / Air Venturi Alpha. 

It's designed to provide a rock solid, longer forend with a wider range of hold options, as well as secure mounting of your accessories using the functional M-Lok.

It comprises of a core with two length options which is secured to the barrel band with one of the standard screws and a clamp that slides onto the air cylinder. The two parts of the hand guard are then secured to the core, with one of the screws also engaging with the action.

You'll need: 5x M4 Nyloc nuts, 1x M4 x 30mm socket dome head bolt, 3x M4 x 25mm socket dome head, 1x M4 x 15 (or 16)mm socket head bolt and 1x M4 x 12mm socket dome head.

Start by placing 4 of the Nyloc nuts into the chosen length core.

A little CA glue carefully dripped around the nut will be a help later, but isn't crucial.

The core can now be secured to the action using one of the original countersunk screws into the barrel band.

Now secure the Clamp using one of the 25mm bolts. Don't forget to locate the last M4 nut into the recess in the Clamp component.

The rear handguard can be attached using 2 of the 25mm bolts and the 30mm bolt at the rear. This passes through the hand guard and the core, engaging with the threaded hole in the action.

NB. There is provision for a magnet of the stock dimensions in the rear hand guard to retain the stock in the folded position.

Lastly fit the forward handguard with the 15 and 12mm bolts.

The parts in the pictures are my prototypes and have a couple of faults. Here's what I learned!
The parts print with no support necessary, but tree/ organic supports add a little stability. The parts are already oriented for the best print definition.
The rear handguard benefits from a brim as it has a fairly small footprint on the bed.
Pay a little attention to the seam placement, as with a little care you can place the seam where it isn't visible on the installed parts.

I went with 4-5 walls at 0.2mm layers with a 0.4mm nozzle and 35% infill, using ABS-GF filament. Probably overkill, but the parts and the installation have a pleasing solidity.