WTS AR15 Bolt Carrier Groups (556)- Lantac Enhanced E-BCG & Microbest C158 HPT/MPI Nitrided BCG

[PBBananaHammock]

Downsizing some AR spare parts. For sale are these 2 bolt carrier groups.



Lantac Enhanced E-BCG: probably seen 250-500 rounds. No issues feeding, ejecting or etc. Slick as snot when cycling, and easy to clean. Sold the upper it was paired with a few years ago but really liked this BCG, so I kept it for a future build that I’ve never gotten around to… $190 shipped.

Specs
- Forward Porting, enlarged vents.
- Balanced flared boss.
- 8620 Carrier, Heat Treated, Hard Turned & Ground.
- MPI Carpenter 158 or 9310 Bolt, Shot Peened, Hard Turned / Ground.
- NiB UCT EXO Coating.
- CP-R360 Domed Cam Pin
- Mil-Spec Gas Rings
- Mil-Spec Staked Gas Key
- Grade 8 Hardened Fasteners
- All Hard Chrome surfaces are to MIL-STD-171 1.2.2.2
- Shot Peening is conducted with S110 shot, Established by Almen Gage A-2 strip .006 -.008



Microbest C158 HPT/MPI Nitrided BCG: Brand new and never used, just has a little oil on it. Just been sitting around as a spare part… $95 shipped.

233/5.56 NATO
Salt bath nitride finish
M16 cut
Aircraft quality 8620 steel carrier
4130 steel gas key
Properly staked grade 8 gas key screws
Carpenter 158 steel bolt
4140 steel extractor
MIL-SPEC O-ring
MIL-SPEC gas rings
4140 steel cam pin
8740 steel firing pin with hard chrome finish
Magnetic particle inspected



I accept PayPal and I’ll cover shipping.