Osprey Defense OPS-420 Gas Piston Retrofit Conversion Kit AR-15 Large Barrel Diameter Rifle Length
- Available for carbine, mid, and rifle length gas systems
- For barrel diameters greater than .875"
- Compatible with the following calibers: 223 Rem/5.56x45mm NATO, 5.45x39mm Russian, 7.62x39mm Russian, 6.5 Grendel, 6.8mm Rem SPC
- Suppressor and full-auto compatible
- Solid Billet Bolt Carrier
- Piston Chamber
- Operating Rod
- High Heat Handguard
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