I built this on a Mattis lower.
RTB bolt, CMMG 4.5" barrel, Cheapo 5" rail,
Stag Spikes butt plug, Blackdog mags, Magpul stuff.
Fits in a computer bag, with 25 round mag in it.
Only problem I've had is with some shittly Federal 38 grain ammo that didn't work in much of anything.
Going to try it with my new Oculus this weekend.
{pew}
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