Atlas Custom Works Triangle Rise Stock w/ Butt Pad for 20mm Rails, Desert

If you're building a custom DMR or PDW around a receiver with a 20mm rail, you probably don't have a stock that fits. Standard buffer tubes won't mount, and you're left with a floating rear end or a makeshift solution that slides under recoil.

The Triangle Rise from Atlas Custom Works solves that with a minimalist stock designed specifically for 20mm Weaver/Picatinny rails. It's an 8-inch CNC aluminum block with a raised cheek piece, giving you a solid shoulder weld and consistent eye alignment without the bulk of a full-length stock. The integrated rubber buttpad absorbs recoil and keeps the stock from digging in during fast transitions.

What the triangle shape does. The rise puts your cheek at a better height for most optics and keeps your head in the same spot shot to shot. That matters more on a DMR where you're counting shots than on a CQB carbine where you're moving between targets.

Internals and build. This is solid CNC aluminum, not stamped or polymer. At 400 grams (roughly 0.88 lbs), it's light for what it is, but it carries like metal. The mounting interface bolts directly to any 1913 Picatinny 20mm rail—no adapters, no shimming. You do need the right screws and a torque wrench to get it seated properly, and those aren't included.

What it's not for. This is a fixed stock with no length-of-pull adjustment. If you need to dial in fit or swap between different shooters, look at a telescoping design instead. It's also not a buffer tube replacement on a standard M4 platform; this mounts to the rail, not the receiver.

Desert colorway. Includes the stock only—mounting hardware and a torque wrench are your responsibility.