I bought the element and returned it because of design flaws, it has great potential but lacks in details and execution. The cocking is very hard and only way to do it "right" is to cock the hammer with lower tiny hammer which hurts your fingers after a few times and then use the larger carbon fiber cocking handle to load the pellet. the friction surface is carbon and carbon or soft material so it will never last or have smooth cocking. They achieved their goal of being as light as possible but sacrificed basically everything else. My other gripe is no way to mount standard moderator nor anyway to adjust or tune the gun. oh, the mag won't stay in place for me either because it's held on with wimpy little magnet AND misaligned. There are some good design points but failed in most aspects, it's a real shame!
I still have the AEA carbine which I haven't shot more than 10 mags because I've been waiting for their moderator promised to me, it's almost 3 months now. Without a way to mount a moderator it's damn loud and no where near backyard friendly or even pleasant to shoot. The HP "platform" has many good points and VERY modular and has great potential but lacking details like moderator and power adjustment leaves them well behind in time. All their semi auto line of guns including the pistol use the same action just different parts, very modular and awesome flexibility, I love that part. Also a real shame because it has great potential if they can fix the details. Maybe the marketing manager is in charge of the product development, don't think they can even shoot the guns they designed.
EDIT: also the trigger on the semi auto is NOT adjustable and very stiff, not bad but very stiff. When shooting the gun is loud and violent because of the gas operated semi auto cocking mechanism. It actually makes a descent firearm trainer because it's rather firearm like, just need to remember the 10 round magazine will keep rotating and firing after you run out the pellet.