Anyone running one? What are your thoughts? How does it run on short barreled rigs? Is it really heavy on the end of a pistol?

**** updated 4/9/2017

Ran my .300 with the barking spider today and gotta say it was great! The compression was from the muzzle was very mellow compared to my .223 with cheap blast device. I totally recommend it if your looking at them....

No complaints. Works as intended. I run it on a 7.5" sbr. No problem with weight.

Have you tried another end cap that they sell?

Heavy

I have one on my 10.5 SBR and I don't notice the weight when on the rifle since my barrel is fairly heavy to begin with. You can tell the weight though when you have it off. A solid chunk of metal. I have shot the normal end cap and the flash hider end cap. I usually have the normal end cap and it does the job. Directs the sound forward and isn't very loud standing behind the gun. My father in law thought my 14.5 colt upper with a BCM A2X was much louder. I have noticed though on my setup with the barking spider and a lwrc UCIW there is a tad more recoil than normal.

I just got the dynacomp end cap which I will be trying out this week. The one thing I will say and Spike's made it right is that some of the barking spiders have different threads than others. They have a new style thread and an old style. The Barking Spider II I purchased ended up having the old style because the original dynacomp endcap I bought would not thread all the way on. Spike's ended up sending me an old style for free. If yours has the new style threads then you can have the dynacomp end cap that didn't fit mine. Just pay shipping.

Wow that would be pretty cool! I will see when it gets here....

Do you have yours tucked under the handguard? Have any pics?

Just let me know. Not sure if there is a way to tell if the threading is the new pitch they use without trying the comp endcap on it to see if it threads all the way down. This is the only pic I have. It's on a 10.5" barrel with an 11" handguard.

Sweet gun! Thanks for your time....

Updated op