My little two stamper:
PSA Colt lower
Matrix side charging upper
Faxon 4.5" 9mm barrel
HK Parts 3-lug 1/2X28 barrel adapter
Odin Works 02 Lite Keymod Handguard
BCM carbine receiver extension
BCM Mod 3 grip
MFT minimilist stock
JP 9mm bolt
JP 9mm SCS
JP EZ trigger kit
PSA 32 round mags
Silencerco Octane 9 suppressor
Primary Arms red dot w/ Larue quick disconnect mount.
With no mag, no suppressor and no red dot, it weighs 5# 2oz.
It took me a little while to get it working properly. I had to bend the ejector to ride next to the inside of the bolt to get it to eject the spent brass and I had to file (shorten), the bolt catch extension (it originally extended to far into the mags obstructing the bullets causing mis-feeds). I also had to notch the Odin Works handguard to fit around the bump on the upper for the side charging handle.
Now that I've got it working reliably, I've run 115, 124 & 147 gr Freedom Munitions new and reman without any issues. All suppressed.