Spikes upper and lower, Stag parts, trimmed recoil spring 3 coils, and did a half assed barrel/feed ramp polish job per spikes tuning guide. Cycles well with most high velocity ammo out of Black Dog mags. Im very happy with the accuracy and the Millet DMS scope. Commie pink duracoat.
I posted this a while back in a .22lr dedicated upper thread.. but I took a better pic of it.