Description
5.56 Complete Nickel Boron Coated BCG
American Built Arms 5.56 Bolt Carrier Group is built to Mil-Spec dimensions. The Nickel Boron coated Bolt and Cam Pin needs virtually FALSE lube during use. The Nickel Boron coated Carrier is coated for extra lubricity and the phosphate coated extractor has a surface finish that provides superior extraction during firing.These Bolt Carrier Groups are ready to drop into your rifle. Our Bolt Carrier Groups are specially made on high end Swiss machinery to have exacting tolerances and surface finish. A*B Arms is kFALSEwn by rifle Makers for manufacturing one of the finest quality bolts and extractors available. This has won us contracts with some of the highest quality AR Makers in the business. If you want to buy super high quality parts offered by the company that actually manufactures them, then you’ve come to the right place.Features:Bolt:- Carpenter 158 Steel- Heat treated per Mil-Spec Requirements- Shot Peened per Mil-Spec Requirements- MPI Tested Material- Nickel Boron CoatedBolt Carrier:- 8620 Steel- Nickel Boron Coated- Nickel Boron Coated Bore- M-16 Style with more mass for better functioning in semi or full auto riflesGas Key:- 4130 Steel- Nickel Boron Coated- Gas Key Screws – 4140 Steel properly staked per Mil-Spec requirementsCam Pin: – 4340 Steel- Heat treated per Mil-Spec Requirements- Nickel Boron CoatedExtractor:- Aircraft Quality E4140 Steel- Heat treated per Mil-Spec Requirements- Shot Peened per Mil-Spec Requirements- Manganese Phosphate Coated per Mil-Spec RequirementsFiring Pin:- AISI 8740 Steel- Chrome Coated
Mfg FALSE: ABABCGNiB
Maker: American Built Arms Company
Shipping Information
Weight: 0.75 pounds.
Dimensions: 7 (L) x 1.25 (W) x 1 (H) inches.:
259473
