
Radian Weapons R0027 Model 1 Complete Upper 300 Blackout 9″ Black Nitride Barrel
February 8, 2026
SANTAN STT-15 PILLAR UPPER RECEIVER
February 8, 2026SCO PISTON 5/8X24
$75.65
SCO PISTON 5/8X24
41 in stock
SilencerCo pistons are designed for easy replacement to fit different host firearms or calibers. They are made from 17-4 stainless steel and heat-treated for maximum durability. The piston is part of the Nielson device, which moves to enable semi-automatic cycling and unlock pistol barrels. Use a Fixed Barrel Spacer for fixed barrel setups. SilencerCo pistons feature female threading that connects to SilencerCo threaded barrels.
| UPC | 817272010206 |
|---|---|
| Manufacturer | Silencer Co |
| Manufacturer Part Number | AC30 |
| Model | Osprey/Octane |
| Thread Pattern | 5/8"x24 |
| Product Type | Silencer Piston |
| Caliber/Gauge | .30 Carbine |
| Length | 2.1 |
| Package Height | 1.2 |
| Package Width | 4.7 |
| Shipping Weight | 0.1 |





