The Great Lakes AR-15 in .450 Bushmaster (brand part no. GL15450SS ODG) is built around an 18-inch, stainless steel barrel with a 1:24 twist, threaded 11/16×24. Great Lakes finishes this rifle in OD Green, builds an oversized 7075 upper to handle the large .450 Bushmaster case, with modified M4 feed ramps and a mid-length gas system. The rifle mounts a 15.25-inch full-picatinny handguard, feeds from a 5-round magazine, measures 42.15 inches overall, and breaks at a mil-spec 5.5-6 pound trigger pull. Among AR-platform rifles in the AR rifles category, the AR-15 favors hunters who want a big-bore straight-walled-cartridge AR.

Key Specifications

• Chambered in .450 Bushmaster.
• Rifled at a 1:24 twist over an 18-inch, stainless steel barrel.
• Muzzle is threaded 11/16×24, with a muzzle brake included.
• Upper receiver is an oversized 7075 design for the large case.
• Runs a mid-length gas system.
• Handguard is a 15.25-inch, full-picatinny aluminum design.
• Feeds from a 5-round magazine.
• Overall length is 42.15 inches.
• Finished in OD Green.

Frequently Asked Questions

Why the oversized upper receiver? It’s built to accommodate the large .450 Bushmaster case.

What is the magazine capacity? 5 rounds.

Buy the Great Lakes AR-15 .450 Bushmaster, ODG

A big-bore straight-walled-cartridge AR is exactly what this AR-15 delivers. As soon as it’s ready to ship, order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.