Great Lakes Firearms GLFA GL15450BLK 18" Black Semi-Auto Rifle .450 Bushmaster Blue/Black Rifle

A: Hi Randall and welcome. No, this model uses mostly standard mil-spec AR parts. The long action calibers are the mostly proprietary parts rifles. Cheers, stay safe and enjoy!

A: Hi Randall, GLFA rifles have Mill-spec bolts and a Mil-spec fire control group (trigger parts). Their barrels and upper/lower receivers are considered better than MIl-spec. They use an M4 multi-position stock, a free-floating M-lock handguard, and a radial muzzle break. Mill-spec itself doesn't mean quality. It means, functional, and accurate enough. HIgh-end gun makers seldom use many MIl-spec parts because they can usually improve on them a bit. That's what GLFA does. Stay safe & have a great day!

A: Hi Randall and welcome. No, this model uses mostly standard mil-spec AR parts. The long action calibers are the mostly proprietary parts rifles. Cheers, stay safe and enjoy!

A: The short answer is yes. Many parts are proprietary and and are not directly compatible with a standard AR15 type rifle. I hope this helps in your decision.

A: Hi Randall and welcome. You can use standard 350 Legend AR Magazines no issue. Cheers, stay safe and enjoy!

A: Hi Randall, 450 Bushmaster magazines are standard AR mags. In the case of the .450 Bushmaster, a custom follower will have to be used, and in doing so, restricts the magazine's capacity to a mere ten rounds of ammo. While some users have had success utilizing standard 5.56 magazines, we suggest using dedicated .450 Bushmaster magazines. When using a 5.56 magazine, you will see greatly reduced capacity and will potentially run into issues without the use of a single-stack follower. I am only finding a 7rd magazine https://www.budsgunshop.com/product_info.php/products_id/154583/cpd+magazine+ar15+.450+bush- , Ten round mag out of stock https://www.budsgunshop.com/product_info.php/products_id/712016641/ati+mag+450bush+steel+10rd , Stay safe & have a great day!