Microbest C158 HPT/MPI 5.56 Bolt Carrier Group - Chrome
In stock
The Microbest Bolt Carrier Group is a great choice for any build. This drop-in AR-15 BCG features a corrosion resistant hard chrome finish, MIL-SPEC dimensions, and a magnetic particle inspected carpenter 158 steel bolt. Crafted from domestically sourced 8620 steel, the M16 cut carrier includes a gas key fastened by properly staked grade 8 screws. Made in the U.S.A. and covered by a lifetime warranty, you can count on this BCG for a lifetime of service.
Features:
- .233/5.56 NATO
- Hard chrome 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
- Proudly made in the U.S.A.
| Weight | 11.6 oz |
|---|---|
| Dimensions | 7.5 × 1 × 1.25 in |
| Bolt Material | Carpenter 158 Steel |
| Cartridge Compatibility | .223/5.56 NATO/.300 BLK |
| Finish | Chrome |
| Carrier Profile | M16 |
| High Pressure Tested | Individually HP Tested |
| Magnetic Particle Inspected | Magnetic Partical Inspected |
| Platform | AR-15 |
| Bolt Finish | Chrome |
| UPC | 14700 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
- Reviews
- Questions
- chrome
- gas key
- quality
- finish
US
Best BCG for the price
I've purchased 15 in total and all 15 were flawless. You will not find a better BCG for the price, especially a chromed BCG. The only other chromed BCG that will beat it is a Centurion Arms, but those cost 3 times as much. Chrome bolts are hands down the easiest to clean, the fouling and carbon build up wipes off with ease, no scrubbing needed. I've built many custom AR's with this BCG and I HIGHLY recommend it. Buy it, you will not regret it. Pair it with a quality upper receiver and barrel, and you will have a super reliable workhorse.
USNo imperfections
Mine looked great out the box.
USNice BCG.
I won’t have to worry about a BCG for a long time.
USNothing cleans up like chrome!
Got this in the mail today and ran twenty rounds of some warm reloads through it for peace of mind after giving it a good drink of oil. Pulled it out and inspected, no cracks or chips, gas key bolts still tight. Bolt and carrier cleaned up with dry paper towel. I know it's only twenty rounds, but better than many reviews where it hasn't even been fired.
USThis will make you only want chrome from now on
In my AR building journey I've tried several different styles and finishes of BCGs - this stands far above the rest. Came ready to fire without any issues, looks great, works flawlessly and wipes clean immensely easily. Lubing this up to be ready to go was a breeze and the finish stays slick after hundreds and hundreds of rounds. Have not had a single hiccup yet - buy this and realize for yourself why it beats nitride in every way
