The .45-70 Government cartridge, a venerable round with a rich history, continues to captivate shooters. Its powerful stopping power and impressive accuracy make it ideal for hunting large game, long-range target shooting, and even competitive shooting disciplines. Building your own .45-70 rifle offers a rewarding experience, allowing for customization and a deeper understanding of your firearm. This guide delves into the essentials of finding and utilizing a 45-70 AR build kit.
Understanding .45-70 AR Build Kits
Unlike the ubiquitous AR-15 platform chambered in 5.56 NATO or .223 Remington, building a .45-70 AR requires specialized parts. A standard AR-15 lower receiver won't suffice. Instead, you'll need a build kit designed specifically for the larger .45-70 cartridge. These kits typically include:
- Upper Receiver: This houses the barrel, bolt carrier group, and charging handle. It's often heavier and more robustly constructed than a standard AR-15 upper to handle the .45-70's recoil.
- Lower Receiver: While sharing some similarities with AR-15 lowers, .45-70 lowers are adapted to accommodate the larger magazine and often feature reinforced components.
- Barrel: The barrel is a crucial component. Barrel length influences accuracy and velocity. Longer barrels generally yield higher velocities but can be less maneuverable. Shorter barrels provide improved handling but may sacrifice some velocity. Look for barrels constructed from high-quality materials like chrome-moly steel or stainless steel.
- Bolt Carrier Group (BCG): This component cycles the cartridge, and its strength is paramount given the .45-70's recoil. Ensure the BCG is specifically designed for the .45-70 cartridge.
- Charging Handle: A standard AR-15 charging handle might work, but a reinforced one is recommended for added durability.
- Magazine: .45-70 AR magazines are typically smaller capacity compared to AR-15 magazines.
- Other Components: This could include sights (iron sights or optic mounts), stocks, grips, and other accessories.
Factors to Consider When Choosing a .45-70 AR Build Kit
Several factors influence the selection of the right .45-70 AR build kit:
1. Budget:
Build kits range in price significantly. Determine your budget beforehand to narrow your options.
2. Intended Use:
Are you building this rifle for hunting, target shooting, or both? This influences barrel length, stock choice, and other features.
3. Brand Reputation:
Research the reputation of the manufacturer. Look for companies with a history of producing high-quality, reliable firearms components.
4. Materials and Construction:
Pay close attention to the materials used in the construction of the kit's components. High-quality materials ensure durability and longevity.
5. Reviews and Feedback:
Before purchasing, thoroughly review online feedback and user experiences to gauge the performance and reliability of the kit.
Assembling Your .45-70 AR Build Kit
Once you have your kit, carefully follow the manufacturer's instructions. If you lack experience building AR-platform rifles, seek guidance from an experienced gunsmith. Improper assembly can lead to malfunctions or even dangerous situations.
Beyond the Kit: Essential Accessories
Even with a complete kit, you might need additional accessories:
- Optics: A scope or red dot sight will enhance accuracy, especially for long-range shooting.
- Ammunition: Choose high-quality ammunition appropriate for your intended use.
- Cleaning Kit: Regular cleaning and maintenance are crucial for the rifle's longevity and reliable operation.
Building a .45-70 AR rifle is a fulfilling endeavor. However, remember safety is paramount. Always handle firearms responsibly and follow all safety guidelines. This comprehensive guide aims to equip you with the knowledge to embark on your .45-70 AR build journey with confidence. Remember to consult with experienced gunsmiths if you have any doubts or require assistance during the assembly process.
