I have a Colt M4 model 6922 (a model 6920, except 1/9 twist)in 98+%. It has all the current features...small pins, raised fence, step down, lug, no sear block, etc. It is marked with the LEO roll marks. The rifle includes an ARMS SIR, #40 BUIS,a Badger Ordnance latch, and a Tango Down vertical foregrip. The rifle is ready for optics and only has 200 rounds through it. The 1/9 twist is IMO much better with most ammo. I can supply pics. Call me at 804-314-7732 or email.