The Angstadt Arms Bolt Carrier Group (Angstadt Arms part no. AA40BCGNIT) is a .40 S&W bolt carrier assembly machined from 8620 alloy steel and finished in QPQ black nitride for corrosion resistance and smooth cycling. Angstadt Arms builds the carrier to run with GLOCK 40 S&W magazines, letting AR-platform builders take advantage of widely available, inexpensive Glock-pattern mags. It works with a standard AR-15 hammer, so no special fire control parts are needed to complete the build. The carrier also features a removable weight, giving compatibility with a Law Tactical folding stock adapter for a more compact overall package.

Key Specifications

• Bolt face and dimensions machined for .40 S&W.
• Machined from 8620 alloy steel.
• Finished in QPQ black nitride for corrosion resistance.
• Compatible with GLOCK 40 S&W magazines.
• Works with a standard AR-15 hammer.
• Features a removable weight for use with a Law Tactical folding stock adapter.

Frequently Asked Questions

What magazines does this carrier run? GLOCK 40 S&W magazines.

Does it work with a Law Tactical folding adapter? Yes, its removable weight is built for that compatibility.

Buy the Angstadt Arms .40 S&W AR-15 Bolt Carrier Group

Build a reliable .40 S&W AR platform running Glock-pattern magazines with a genuine Angstadt Arms carrier. See more from Angstadt Arms or shop our full AR bolt carrier groups selection. Order it from our Lubbock, Texas gun shop for fast, insured shipping.