Rock Slide USA .40 S&W Cal Upper for Glock 27. Model RS1SC40. OD Green Cerakote finish. Fits Polymer80 PF940SC lower and any other 26/27/33 Gen3 or Gen4 lower.
- CNC Machined on state of the art equipment.
- Compatible with 3rd & 4th Gen G17s.
- 4.5″ barrel.
- Tighter barrel lock up.
- Manufactured from premium made in specialized factories 416R stainless steel bar-stock.
- Gas vacuum heat-treated and double-tempered to mitigate stress.
- Broach cut rifled in 1:16LH twist for improved accuracy, and the ability to shoot lead (non-jacketed) projectiles.
- CNC diamond honed bore for improved accuracy and concentricity.
- Fully supported and polished chamber and feed ramp.
Crafted from durable polymer with reinforced feed lips and steel inserts, these SGM Tactical magazines are built using many of the same materials and standards as Glock factory magazines. Stainless upgraded springs ensure reliable long-term feeding through even the most extreme use cases.
These magazines are compatible with any double-stack 9mm Glock pistol or carbine, delivering double the firepower for more trigger time on the range or in home defense situations.