[Jollyrancher51]

I'm piecing together a (AR) 308. Available BCG's of interest are WMD, Black Rain Ordanance, Aero and some others. This will go on a CMT upper (DPMS). I want a quality product but trying to stay out of the $300+ options if possible. Also, avoiding the bargain price "Made in USA" no names, as they may or may not be alright. My preference is NiB or other higher end finishes and single ejector.

Opinions please on which available BCG to buy.

 

[greentick]

Toolcraft DLC 308 Bolt Carrier Group - Arm or Ally

Toolcraft DLC 308 Bolt Carrier Group. Diamond-Like Carbon Coating is the most sought after coating in today's market. 9310 Bolt, Lifetime Warranty

www.armorally.com

 

[backwoodsshooter]

ToolCraft and call it a day



EDIT-

@greentick beat me to it

 

[Tanlover442]

Is Diamond Like Coating same as Melonite? If not, how do they compare?

 

[Strawdawg]

DLC Coatings

Diamond Like Carbon, DLC coatings from HEF USA.

www.hefusa.net

 

[Tanlover442]

DLC Coatings

Diamond Like Carbon, DLC coatings from HEF USA.

www.hefusa.net

Thank You.....very informative

 

[lupint2t]

Had a 6.8spc toolcraft bcg and extractor broke. They replaced it at no charge so definitely say customer service is g2g. Just built a 308 for cousin and put a KAK bcg in it. Big supporter of KAK stuff.

 

[Jollyrancher51]

It seems the double ejector like KAK are popular. It seems that would weaken the bolt with an extra hole drilled in the face. Also looks like it would be harder on brass. This setup must have solved a particular problem someone had. Is it really necessary to have twice the ejector force?

Were ejection failures more of an issue with the newer chamber offerings? 6.5 Creedmoor, 243, etc.

 

[Jollyrancher51]

KAK is "out of stock". Toolcraft is available. Looks like we have a winner. Thanks for all input.

 

[Clark Kent]

100% agree; go with Toolcraft.

 

[carnaby]

The JP 308 BCG has no equal. Nothing is close.

Lots of worthy 308 BCGs on the market but the JP is by far the best.

 

[Jollyrancher51]

My Toolcraft DLC BCG arrived today from SpiceTac. It looks very nice. It is quite heavy however, and dwarfs my 6.8 BCG's and 6.3 oz heavier. The build is not completed but getting closer. Thanks for all input.

 

[Big Bore]

I have three of the Brownells LR-308 BCG. They have the .070 firing pin and are black nitrided. I have had absolutely zero problems with them and they are in the $170 range.

 

[constructor]

PSA owns toolcraft now.
Aero is middle of the road.
The original 308 bolts were made from 8620, now most are made from Carp 158 or 9310 and both are easily 3 times stronger than they need to be as long as they are not melonite or Black Nitride treated.

 

[ac6916170]

It seems the double ejector like KAK are popular. It seems that would weaken the bolt with an extra hole drilled in the face. Also looks like it would be harder on brass. This setup must have solved a particular problem someone had. Is it really necessary to have twice the ejector force?

Were ejection failures more of an issue with the newer chamber offerings? 6.5 Creedmoor, 243, etc.

I have several hundred rounds of 243 through mine with a single ejector with out a single problem.

 

[Jollyrancher51]

I went with the Toolcraft DLC single ejector. The upper is built and the lower is waiting on a MBT to test fire. I did have a concern about the "fit" of the BCG in the upper. This is a CMT upper. There is a lot of slack/movement in the tail of the BCG when locked up. This is noticed with the upper removed and moving up and down where the BCG meets the buffer. There is about .050 play. I did notice a lot of slack in my AR15 uppers as well. Is this normal to have that much play in a large frame?