Timney Triggers 521 Featherweight Deluxe Curved Trigger with 3 lbs Draw Weight for Rem Model 7 Firearm Accessories Compatible gun models are Remington

Compatible gun models are Remington 870/1100/1187/887

it only requires swapping out the upper receiver

The Tactical Deluxe with Palm Shelf is the same size and shape as the Tactical Deluxe grip but has the addition of an adjustable palm shelf to support your firing hand

This replacement or spare magazine is compatible with your GSG MP40

Timney Triggers 521 Featherweight Deluxe Curved Trigger with 3 lbs Draw Weight for Rem Model 7 Firearm Accessories Compatible gun models are RemingtonTimney Triggers feature precision machining, workmanship and are individually tested and calibrated by hand. Timney's Featherweight Deluxe Trigger is precision machined and hand fitted to provide a crisp trigger pull. It features a lightweight alloy housing and hardened steel working surfaces. This model is compatible with your Remington 7 firearm and has trigger blocking side safety.