Why choose one an AR15Discount.com AR-15 rifle kit to build your next hunting rifle? The answer is easy – if your state allows it, the AR-15 is one of the most adaptable firearms available, making it a top choice for hunters. Its modularity, semi-automatic action, and ability to be tailored for specific game make it a reliable and efficient hunting platform. One of its standout advantages is the ability to fire quick follow-up shots, a feature that is invaluable when pursuing fast-moving game or ensuring ethical kills. However, before committing to an AR-15 hunting build, it’s essential to confirm that your state permits hunting with semi-automatic rifles and to understand any specific restrictions regarding caliber, magazine capacity, or hunting seasons.
Once you’ve confirmed legality, the next step is customizing your AR-15 rifle kit for the field. From selecting the right caliber to securing accessories and ensuring your rifle is accurate and reliable, this guide will help you build the ultimate hunting AR-15.
Selecting the Right Caliber for Hunting
Choosing the right caliber for your AR-15 rifle kit s one of the most critical decisions you’ll make when customizing it for hunting. The caliber you select impacts not only your rifle’s performance but also its compliance with hunting regulations and the type of game you can ethically hunt.
5.56 NATO / .223 Remington
The 5.56 NATO and .223 Remington are lightweight, accurate, and widely available calibers with our AR-15 rifle kits. They are ideal for small game and predators like coyotes or varmints, excelling at longer ranges due to their flat trajectory and minimal recoil. However, these calibers often lack the energy needed for larger game like deer or hogs. When using 5.56/.223 for medium-sized game, high-quality bonded or expanding ammunition is essential. Hunters must also prioritize precise shot placement to ensure humane kills.
300 Blackout
The 300 Blackout is one of the most versatile calibers for AR-15 hunting, particularly when paired with supersonic ammunition. Supersonic loads, typically featuring 110-grain or 125-grain bullets, deliver sufficient energy to take down medium-sized game like deer at moderate ranges. For deer hunting, this combination offers excellent performance, especially in environments where shot distances are limited, such as dense woods.
However, while the 300 Blackout is effective on smaller hogs, many hunters feel it is underpowered for larger, tougher feral hogs. In these cases, calibers like .308 Winchester are often preferred for their superior stopping power and penetration, especially when taking shots at varying angles or distances. Subsonic 300 Blackout loads, while ideal for suppressed setups due to their quiet operation, are best reserved for close-range hunting of smaller game or hogs in tightly controlled scenarios. The 300 Blackout remains a popular choice for its versatility and compatibility with shorter barrels, but it’s important to match the caliber to the specific game and hunting conditions.
6.5 Grendel
For hunters focused on long-range precision, the an AR-15 rifle kit using a 6.5 Grendel barrel is a top choice. Its high ballistic coefficient allows for flat trajectories and excellent energy retention, making it ideal for open fields or mountainous terrain where shots may exceed 300 yards. This caliber is particularly effective for deer and medium-sized game, providing the accuracy and terminal performance needed for ethical kills. While factory ammunition can be more expensive, the 6.5 Grendel’s performance justifies the investment.
6.8 SPC
The 6.8 SPC is a balanced option, offering significant stopping power and good performance in shorter barrels. It excels at medium ranges, making it a reliable choice for deer and hogs in wooded environments or areas where shots are typically under 300 yards. Designed with hunting and military applications in mind, the 6.8 SPC provides a blend of power and versatility that many hunters appreciate.
350 Legend
For hunters in states with straight-wall cartridge restrictions, using an AR-15 rifle kit as the basis of a 350 Legend build has become a go-to option. This caliber provides significant stopping power while keeping recoil manageable, making it a great choice for deer hunting. Effective within 200 yards, the 350 Legend is particularly suited for wooded or semi-open environments. Its compliance with hunting regulations and affordability make it an excellent choice for a wide range of hunters.
7.62×39
Originally designed for the AK-47, the 7.62×39 has gained traction among AR-15 hunters for its affordability and performance. It works well for short- to medium-range hunting, delivering reliable penetration and expansion when paired with soft-point or hollow-point ammunition. This caliber is effective for hogs and deer, though hunters should ensure their AR-15 is properly optimized for 7.62×39 to avoid potential cycling or feeding issues. Instead of choosing an AR-15 rifle kit, we’d recommend finding a complete 7.62 upper you can trust. We prefer one from Faxon.
AR-15 Rifle Kit Barrel Selection and Hunting Regulations
Barrel length plays a significant role in your AR-15’s performance. A 16-inch barrel, standard for AR-15 rifles, offers a good balance of maneuverability and ballistic performance, making it suitable for most hunting scenarios. Shorter barrels, like those 12 to 14 inches long, are excellent for dense environments but may reduce bullet velocity, affecting terminal performance for some calibers. Keep this in mind as you build out your AR-15 rifle kit.
Longer barrels, such as 18 or 20 inches, provide increased velocity and improved accuracy for long-range shooting. These barrels are particularly beneficial for calibers designed for precision, such as 6.5 Grendel or 6mm ARC. However, the added length on your AR-15 rifle kit can make the rifle more cumbersome in tight spaces. Always check your state’s hunting regulations regarding barrel length, as some require a minimum of 16 inches, while others have specific caliber restrictions based on game size and terrain.
The Importance of a Good Trigger
A quality trigger is one of the most impactful upgrades you can make to your AR-15 for hunting. The trigger directly affects your accuracy and control, especially during high-stakes moments in the field. A smooth, consistent trigger pull ensures precise shot placement, reducing the likelihood of wounding game. Single-stage triggers are often favored for hunting due to their crisp break, making them ideal for quick follow-up shots. Alternatively, two-stage triggers offer greater control for precision shooting, especially at longer ranges. Lightweight, high-quality triggers from reputable manufacturers like Geissele, Timney, or Rise Armament can significantly improve your AR-15’s performance, allowing you to maximize your hunting success.
Cautionary Note on Bolts for 6.5 Grendel and 7.62×39
When using calibers like 6.5 Grendel or 7.62×39 in an AR-15, it’s critical to pay close attention to the quality of your bolt. These calibers feature a larger bolt face compared to standard .223/5.56, which results in reduced material thickness around the locking lugs. This can make the bolts more prone to stress fractures or failures, especially under heavy use or with inferior components. To mitigate this risk, invest in a high-quality bolt from reputable manufacturers like JP Enterprises or Maxim Defense. These bolts are engineered to handle the additional stress, providing greater durability and reliability.
Additionally, be mindful of potential issues with some drop-in triggers. Certain models may lack sufficient hammer mass to reliably ignite primers, particularly when using ammunition with harder primers like steel-cased 7.62×39 rounds. Testing your trigger and bolt setup thoroughly before heading into the field is essential to ensure your rifle functions flawlessly. By prioritizing high-quality components and addressing these potential weaknesses, you can avoid malfunctions and enjoy a more dependable hunting rifle.
The Importance of a Good Zero and Ammo Testing
A properly zeroed optic is critical for ethical hunting, as it ensures your bullet impacts where you aim at a given distance. Most hunters zero their rifles at 100 yards, though a 200-yard zero is preferable for long-range calibers like 6.5 Grendel. Understanding bullet drop, wind drift, and trajectory beyond your zero distance is equally important. Practice shooting at varying distances to familiarize yourself with your rifle’s performance and improve your confidence in the field.
Testing your chosen hunting ammunition is equally vital. Premium hunting ammo, such as bonded or polymer-tipped rounds, is designed to expand upon impact for humane kills. However, just because FMJ practice rounds cycle reliably doesn’t mean hunting-specific loads will perform the same way. Spend time at the range verifying that your ammo feeds properly and aligns with your zero. While testing premium ammo can be expensive, it ensures you’re prepared for real-world conditions.
Optics: Choosing the Right Glass to your AR-15 Rifle Kit
A quality optic added to your AR-15 rifle kit enhances your ability to identify and ethically engage targets. Low-power variable optics (LPVOs) with magnifications like 1-6x or 1-8x are excellent for hunting in varied environments. At low magnification, they function like a red dot, providing quick target acquisition, while higher magnifications allow for precision shots at medium distances.
For hunters targeting nocturnal game like hogs, thermal or night vision optics are invaluable. Thermal scopes detect heat signatures, allowing hunters to spot game in complete darkness, while night vision relies on ambient light to provide clear imaging. Long-range hunters benefit from high-magnification scopes with holdover reticles or adjustable turrets to compensate for bullet drop and wind.
Optic and Reticle Considerations
When choosing optics for hunting with your AR-15, you don’t need extreme magnification. Most hunting scenarios are well-served by low- to medium-power optics, such as 1-4x, 1-6x, or even 3-9x scopes. These provide enough versatility for both close-range and moderate-distance shots while keeping your field of view wide and clear.
An illuminated reticle can be a game-changer, especially in low-light conditions. While some reticles are overly complex with unnecessary markings, a simple illuminated dot in the center is often the most effective. This minimalist design enhances visibility without cluttering your sight picture, allowing you to maintain focus on the target and surrounding environment. For nighttime hog hunting, where hogs lack the eye shine that predators like coyotes exhibit, the illuminated dot becomes even more valuable. It helps you confidently acquire and engage your target in challenging conditions without obscuring your view of the field.
The Role of a Sling in Hunting
A high-quality sling is an essential accessory for a hunting rifle. It allows you to carry your AR-15 comfortably over long distances, keeping your hands free for climbing, tracking game, or using other equipment. Two-point slings are particularly useful, offering stability and easy adjustments for different carrying positions. Look for a padded sling with quick-adjust straps to enhance comfort and flexibility during extended hunts.
Securing Your Gear for the Field
Reliability in the field begins with ensuring every component of your AR-15 is securely attached. Before heading out, check that your optic mounts, handguard, sling, and stock are properly tightened. Use thread-locking compounds like Loctite on screws to prevent them from loosening under recoil or prolonged use. Test your magazines with your hunting ammunition to ensure they feed reliably, and always carry a spare, field-tested magazine to avoid issues in critical moments.
The Black Rifle Doesn’t Have to Be Black
Camouflaging your rifle helps it blend into natural environments, reducing the likelihood of spooking game. Cerakote provides a durable, weather-resistant finish in a variety of colors and patterns, making it a great option for long-term camouflage. For a budget-friendly alternative, spray painting certain parts like the completed upper of your AR-15 rifle kit with earth tones or camouflage patterns using stencils or natural elements creates effective concealment. These options enhance your rifle’s functionality as a hunting tool while adapting it to your environment.
FAQs on Customizing a AR-15 Rifle Kit for Hunting
What’s the best caliber for hunting with an AR-15?
The best caliber depends on your target game and hunting conditions. For deer, 6.5 Grendel and 6.8 SPC are excellent choices. For hogs, 300 Blackout and 7.62×39 offer great stopping power. In straight-wall cartridge states, 350 Legend is a top option.
Are AR-15s legal for hunting in my state?
This varies by state. Some allow AR-15s but impose restrictions on magazine capacity, calibers, or use of suppressors. Check your state’s wildlife agency for specific regulations.
How do I improve the accuracy of my AR-15 for hunting?
Accuracy can be improved by upgrading your trigger, zeroing your optic properly, and using high-quality, tested ammunition. Free-floating handguards and match-grade barrels can also enhance precision.
What’s the ideal weight for a hunting AR-15 build?
An ideal hunting AR-15 should weigh between 6.5 and 8.5 pounds, including optics. This keeps the rifle light enough for portability while maintaining stability for accurate shots.
What’s the difference between a hunting AR-15 and a tactical AR-15?
A hunting AR-15 is optimized for game-specific calibers, longer-range optics, and features like lightweight components and camouflage finishes. Tactical AR-15s prioritize durability, higher magazine capacities, and close-quarters functionality.
Can I use my standard AR-15 rifle kit for hunting without upgrades?
Yes, but upgrading to a hunting-specific caliber, high-quality optic, and tested ammunition will significantly enhance your rifle’s performance and reliability in the field.
How do I choose the right optics for my AR-15 hunting build?
Consider your environment and target game. LPVOs are versatile for mixed terrain, while thermal or night vision optics are ideal for hog hunting at night. Long-range scopes work best in open fields.
What’s the best way to reduce the weight of my AR-15 for hunting?
Opt for lightweight handguards, stocks, and barrels. Use minimalist accessories and avoid overloading your rifle with unnecessary attachments.
Do I need a specific type of ammunition for hunting with an AR-15?
Yes. Use premium hunting ammunition, such as bonded or polymer-tipped rounds, designed for controlled expansion and effective energy transfer. Test your ammo to ensure reliability and accuracy.