We apologize for the inconvenience: we are not currently taking orders, no orders will be filled. 02/2024 Dismiss
We are in prototype development of several exciting products- official launch: Q1 2024
Taking pre orders now on all Castle products. This will determine the priority of product releases- if you see something you like...Register to Let Us Know (we dont spam)
Gibbz billet aluminum side charging upper receiver for AR/M4/MSR platform firearms. Available in RH or LH configurations, rifle or pistol caliber ejection port. – Enlarged...
The CASTLE QD Buffer system allows for tool-less disassembly of your AR buffer tube. Compatible with the CASTLE enhanced modular trigger guard foregrip- a quick...
The Folding Stock Adapter allows you to fold your stock and significantly reduce the length of your rifle for easy stow and travel. The Gen 4 AR Folding Adapter sits closer to your AR lower to reduce the length and any gaps. Turn your rifle into a foldable AR providing a compact rifle setup.
Available in carbine and rifle lengths, our minimalist stock is lighter than anything on the market, weighing in at 2.3 ounces! Featuring a QD sling...
Our Carbon Black series brings lightweight strength and sleek styling to all three AR touchpoints: handguard, pistol grip, and buttstock. Every part is molded and...
The 9mm Glock Conversion Block is a drop-in fit to give you a 9mm capable lower without resorting to buying a pistol caliber-specific option. Designed...
Add some flare to your AR pattern magwell for easier magazine loading with the CASTLE modular trigger guard. Compatible with our QD Buffer system when...
Sylvan Arms Quick Detach Picatinny 3 Slot Rail Mount allows for ease of attaching and detaching rail sections without using tools and within a matter...