5.56 / 300 BLK Bolt Carrier Group (Phosphate Coated and Chrome Lined)
Original price was: $159.00.$135.15Current price is: $135.15.
These 5.56 / 300 BLK Bolt Carrier Groups are Phosphate Coated with Chrome Lined Gas Key & Bolt Channel, Full-Auto rated, properly staked, and the bolts are Matched to the barrel.
For our Phosphate Bolt Carrier Groups – we choose to team up with the best – Microbest, so the end user has dependability time after time, every time.
Our Rosco Phosphate Bolt Carrier Groups are designed to meet the modern-day carbine shooters requirements. We have also balanced input from our consumers and military end users in order to bring you the product you need, not just the one we want to sell you.
In stock
These 5.56 / 300 BLK Bolt Carrier Groups are Phosphate Coated with Chrome Lined Gas Key & Bolt Channel, Full-Auto rated, properly staked, and the bolts are Matched to the barrel. Our Rosco Phosphate Bolt Carrier Groups are designed to meet the modern-day carbine shooters requirements.
For our Phosphate Bolt Carrier Groups – we choose to team up with the best – Microbest, so the end user has dependability time after time, every time.
We have also balanced input from our consumers and military end users in order to bring you the product you need, not just the one we want to sell you.
These BCG’s are to MIL Specification and have a properly staked gas key along with a chrome lined coating for extended performance. They also feature a Shot Peened/ MP tested Matched bolt (with upgraded extractor) which is designed to lock up perfectly with our extensions for extreme accuracy. These BCG’s are made to withstand Full-Auto rated fire and unforgiving use from the end user.
Carrier Material: 8620 Steel
Gas Key: 4130 Steel, attached with Grade 8 hardware, properly staked
Cam Pin: Hardened 4340 Steel
Firing Pin: 8740 Steel, Heat Treated, Mil-Spec, Center-less ground, Hard Chrome Plated
Bolt Material: C158, , Phosphate Coated, MPI/HPT
Extractor: 4140 Steel, Heat Treated, Shot Peened
Ejector: S2-S7 Tool Steel, Shot Peened
Our Phosphate/Chrome BCGs ship with upgraded Sprinco Extractor Kit
Additional information
| Weight | 0.7875 lbs |
|---|---|
| Dimensions | 8 × 1.25 × 1.25 in |
M Koz (verified owner) –
Two things:
1. This BCG completed my Q Sugar Weasel upper, and performs as intended. Flawlessly.
2. Packaging. I cannot begin to explain how impressed and satisfied I am by Rosco’s packaging. Same goes for the barrel I purchased a while back. Good packaging speaks a lot about the care of a company.
Ultra satisfieddddddd.
Nancy (verified owner) –
Nice BCG. one of the better ones being phospate & chrom lined
J (verified owner) –
Excellent product. High quality. Highly recommended and look forward to purchasing again.
Scott DaRoja (verified owner) –
I received this BCG a week or so ago and it has been flawless. I have it paired with a rosco barrel and has been running like a top. I have been recommending this to my friends and I recommend it to whoever is reading this now. Solid product, quick shipping, and smooth transaction.
Michael (verified owner) –
Awesome BCG the chrome line is smooth it’s got a nice phosphate finish. MPI/HTP tested. What more could you want? I paired it with a bloodline 11.5 inch barrel. And let me tell you. This was one of the most properly gassed rifles I’ve ever shot. The BCG is smooth and just functions perfectly. Rosco was also very good with shipping it in a timely manner. Definitely the only company I want barrels and BCGs from.
Robert Hajek (verified owner) –
I received the two Rosco BCG’s and was very impressed with the packaging of the BCG’s and the two piece container in which each were contained. I disassembled the BCG’s and was very impressed with the fit of the cam into the cam raceway. No slop or play. The chrome lining of the interior was excellent and with the naked eye, the machining of the interior of the carrier looked excellent as well. The fit of the bolt into the carrier was excellent. I don’t have gauges to get a true look at the quality of the machining and dimensions, but it is very well built. I will have the BCG’s individually headspaced to 2 of my Colt M4’s to use as backup BCG’s. After that I’ll take them to the range for a function test. I’m very pleased with the quality of these Rosco BCG’s. Thank you for a great product and your great customer service. Will be looking for a Bloodline Sauce Pack very soon.