My target grade AR-15 upper build project has been a drawn-out process — I think the wife and I could have made another human being from scratch by now. I’ve finally settled on a bolt carrier group. Pictured above: my affordable, no-frills BCG from Linkin Armory. Despite a shipped-to-your-door price of $139.99, it’s packed with every high-end part and feature you could hope for, all from/done/made domestically. The who’s who list of features is sure to impress . . .
From Linkin Armory’s BCG product page:
•Bolt – Carpenter 158 Steel, Shot Peened,each and every bolt is HPT per MIL-C-70599A and MPI per MIL-l-6868, Marked HP MP•Extractor – Upgraded 4340 Tool Steel (vs typical 4140, milspec allows for either per original TDP PAGE 7), Shot Peened•Extractor Retaining Pin – S7 Tool Steel, Shot Peened•Extractor Spring – 5 Coil Cryogenic Processed A401 Chrome Silicone Wire Stock, Black Milspec Insert And Crane O-ring (comes assembled with spring and insert, o-ring included separately)•Ejector – S7 Tool Steel, Shot Peened•Ejector Spring – Cryogenic Processed A401 Chrome Silicone Wire Stock•Gas Rings – Milspec Stainless Steel per original TDP PAGE 6•Carrier – 8620 Steel, Full Auto Profile, Chrome Lined Bore•Gas Key – 4130 Chromoly Steel, Permatex Sealant Applied, Grade 8 Fasteners, Properly Staked, Chrome Lined•Cam Pin – 4340 Chromoly Steel, Dry Film Lubricant Applied Per Milspec
•Firing Pin – 8640 Steel, Hard Chrome Plated•Firing Pin Retaining Pin – 1038 Carbon Steel•Any other specs mentioned or outlined in this list can be read by clicking on The Original TDP.
•All material and processes are Certified and from, or performed in, the great United States Of America.
If I ever finish this build project, expect a review on the BCG another couple months and 500 to 1,000 rounds after that. This summer, hopefully.