This is the first real test for using FN 5.7x28mm ammo in the AR5.7 upper. Using a Geissele fire control group, and a spikes punisher lower. Also a Huntertown Arms Kestrel 5.56 suppressor. Also magpul MBUS
All but two round cycled correctly.
#guns #shooting #ar57 #suppressor #ar15 #freedom #America #SpikesTactical #Geissele #Magpul #fn #bullets
![](https://s2.save4k.ru/pic/fYx2sb5Dhb8/mqdefault.jpg)