Example: Things I look for
* M4 Feed Ramp Barrel Extension (USGI)
* M4 Feed Ramp Flat Top Receiver
* T-Marked Upper Receivers
* USGI 1/7 Twist Rates
* USGI 5.56 NATO Chambers
* Mil-Spec 11595E - 4150 Grade Barrel Steel (CMV)
* Chrome Lined Bore and Chamber
* Manganese Phosphate Barrel Finish
* Mil-Spec F-Marked Forged Front Sights
* USGI Government Profile Barrels
* HPT (High Pressure Test) Barrels
* MPI (Magnetic Particle Inspected) Barrels
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*Which ever Lowers are on sale at the time are the ones I get..
*LPK's stag/bushmaster are What I use.
Btw, Good luck on your Find!
ISR