The CCM Auto Trigger Kit with 45 grip is made of aluminum. This kit fits the WGP Karnivor style bodies. The 45 grip has the same internals as our 86* frame and comes with CCM's custom made grip panels. The trigger is lightweight black delrin with a precision roller bearing that mates to the sear. The sear has been diamond honed where it engages the hammer lug for that CCM super smooth trigger pull. The frame mount body screws have been hidden in the frame for that custom look. CCM products carry a LifeTime Workmanship Warranty. This warranty applies to the original purchaser only and is NON-TRANSFERABLE. This warranty does not apply to items that have been abused, misused, modified or repaired. To make sure we get the correct item for you, please send us a picture of the front block and side view of the body.