Battle Arms Enhanced Complete - Lower Parts Kit Steel Black

The Battle Arms Enhanced Complete Lower Parts Kit in steel black delivers a thoughtfully engineered collection of investment-cast components designed to upgrade your AR-15 build beyond mil-spec baseline quality. This Battle Arms Development kit combines proven control surfaces with precision CNC and investment-cast manufacturing to give you a more robust lower receiver assembly—all without the inflated cost of full-custom shops. If you're building a rifle that needs to run reliably and feel good in your hands without breaking the bank, this kit gives you the parts to make it happen.

The standout upgrades here are purpose-driven: the Enhanced Bolt Catch uses investment-cast 8620 heat-treated steel with a manganese phosphate finish for durability at a practical price point. The single-sided Enhanced Safety Selector draws from Battle Arms' design heritage, offering diagonal serrations and mil-spec compatibility. The Enhanced Magazine Release (BAD-EMR) is CNC-machined from billet 7075-T6 aluminum with a distinctive V-shaped button face and horizontal serrations that ergonomically self-center your index finger. The included Adjustable Tactical Grip (BAD-ATG) lets you dial in your preferred angle—17, 25, or 33 degrees—with the provided hex key, so you're not locked into someone else's compromise.

The Enhanced Takedown and Pivot Pins (BAD-EPS) feature improved gripping surfaces with low-profile heads that won't interfere with ambidextrous safety operation. The kit includes everything you need: hardened stainless steel detents, nickel-plated pin springs, and a neodymium magnet to simplify assembly. You also get a mil-spec trigger and hammer assembly with nickel Teflon finish, all springs, detents, and the trigger guard roll pin—everything required for a complete lower receiver build.

Battle Arms Development has focused on the details that matter: ergonomics, material quality, and real-world usability. This isn't overcomplicated or gimmicky; it's a well-thought-out kit that works for hunters, range shooters, and builders who want their AR to feel as good as it functions.

Key Features

• Investment-cast Enhanced Bolt Catch in 8620 heat-treated steel with manganese phosphate finish
• Enhanced Single-Sided Safety Selector with diagonal serrations; mil-spec compatible
• Enhanced Magazine Release (BAD-EMR) machined from billet 7075-T6 aluminum with V-shaped button face and horizontal serrations
• Adjustable Tactical Grip (BAD-ATG) with three selectable angles (17°, 25°, 33°) and textured finger grooves
• Enhanced Takedown and Pivot Pins (BAD-EPS) with improved gripping surfaces and low-profile heads
• Includes mil-spec trigger and hammer assembly with nickel Teflon finish
• All springs, detents, and fasteners included
• Neodymium magnet included for easier assembly
• Complete kit ready for AR-15 lower receiver build

Specifications

Frequently Asked Questions

Will this kit fit my AR-15 lower receiver?

Yes, provided your lower receiver has mil-spec dimensioned pin holes and magazine release pocket. The kit is designed for all standard AR-15, M16, and M4 lower receivers with mil-spec .250" diameter front pivot and rear takedown pin holes.

What's included in this complete lower parts kit?

The kit includes the Enhanced Bolt Catch, Enhanced Safety Selector, Enhanced Magazine Release, Adjustable Tactical Grip (with three angle options and hex key), Enhanced Takedown and Pivot Pins, mil-spec trigger and hammer assembly with nickel Teflon finish, all required springs and detents, the trigger guard and roll pin, and a neodymium magnet to assist with assembly. Everything needed to complete a lower receiver build.

Can I adjust the grip angle on this kit?

Yes. The included Adjustable Tactical Grip (BAD-ATG) offers three proven grip angles: 17°, 25°, and 33°. You can dial it in to your preferred angle using the included hex key, so you're not stuck with a one-size-fits-all design.

Is this kit compatible with ambidextrous safety selectors?

The Enhanced Safety Selector included in this kit is single-sided. However, the Enhanced Takedown Pin design does not obstruct right-side ambi safety selector levers if you choose to add an ambidextrous option separately.