G&P Steel Receiver Hardware Set for G&P / WA M4 Series Airsoft GBB Rifles (Type: Ambidextrous)

"Great kit, fit my G&P WOC M4 challenge kit without any issues. BUT I'll never understand why the sear is NOT included in this kit! It must be purchased separately! Hence the reason for 4 stars instead of 5.

"This ambidextrous steel set seems pretty durable. Being that is was my first modification to my King Arms M4, it was a learning curve. Some modifications were required to allow my rifle to operate properly. This set does not come with a sear for select-fire (a bit disappointing). As a result, I had to use my stock one. Initially, the rifle did not fire properly and I had to adjust the screw which raised or lowered the disconnector. The bolt-catch did not have a hole for a spring like the one stock on my King Arms and doesn't hold much tension. This caused the bolt to prematurely shoot forward into the forward position unexpectedly. My biggest gripe is the magazine release/catch. Installing the release has made it difficult to eject my magazine unless I fully depress the button. Even worse, the catch prevents me from loading a new mag without slightly depressing the button/lever on either side.