Recent content by American Air Arms

Optimized for pellets. Light slugs like the RMR are very good. Any, slug over .300 is going to be very tight.

Twist ?

Yes, absolutely.

Bill, We changed the method of honing which gave us a much better bore, this advantage allowed the move to a tighter bore which equates to shallower lands. A single point cut rifled barrels will improve with a proper lead lap done by hand. Something that all AAA barrels get here at our shop...

Guys, I do appreciate your patience and do give a p**P. Barrel manufacturing has been a most challenging endeavor. Early on, we had some real shit slip through. We have had several challenges to overcome before these early problems could be completely eliminated. Now that we have overcome...

Degas by loosening the burst disk 1/2 turn before removing the Foster fill port.

There are some product line changes coming that I am very excited about. The EVOL line has evolved into the hps and the standard EVOLs line is being retired. There are very good reasons for this, mainly, the similarities and differences are too large. The hps deserves it own identity and the...

They have 5 due at the end of this month. Check with their sales staff to see what is available

Yes, the EVOL hps BR, it will not be called the Apex. Apex is variant exclusive to Airgun West.

As Azrover stated a 12 or 20 fpe 177 on the EVOL platform is not an easy task. In a nutshell, the valve, port volume, and plenum are way too large to operate at those power levels consistently. Aslo hammer energy is also too much. While I was successful a few years ago with some highly...

90D Viton is the best for that location. Newer EVOLs use a teflon backup ring with a 75D Viton O-ring which essentially eliminates extrusion. The is an older regulator body. The gap is normal and is intentional. O-Rings need to be fully presented to the high pressure air to properly seal...

CLP. or any light machine oil.

General information, most burst disk leaks are due to overtightening. The burst disk is a multi layer/part piece that can leak between the layers when overtightened. Once they leak between the part there is no fixing, the disk must be replaced. In this case, from the pictures, the bottom of...

PM me with you details and I'll get one to you.

Is it reassembled? if so bubble check the were the tube meets the receiver. If there are bubbles there it can be the regulator internal o-rings on the adjuster or the piston. Tom