How to Select and Set Up Your First Fighting Rifle

This is the first blog post by Stronghold Corp, and what better way to start than by talking about how to set up a fighting rifle.

First, a quick disclaimer: these are my opinions, based on my own experience. Take what I recommend with a grain of salt, think critically, and choose what works best for you.

Why a Fighting Rifle in 2025

It’s 2025, and you’ve decided you want a “fighting rifle” a reliable, effective tool to protect your family and your castle (your Stronghold). This guide focuses on building that rifle on a budget while making sure it’s practical and dependable.

For most people starting out, the obvious choice is an AR-platform rifle. If you have unlimited funds and want something else, that’s fine but this article is for those who need value and availability.

The AR is the best starting point because:

• Price: Affordable rifles and parts are everywhere.
• Parts Availability: Magazines, ammo, and spares are easy to find.
• Support: Thousands of qualified armorers can work on your rifle.
• Upgradability: Tons of accessories and customization options.

Most new owners will use their rifle for:

• Home defense
• Training classes & practice
• Fun range days
• Light hunting or varmint control

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Minimum Specs for an Entry Fighting Rifle

Here’s what I consider the baseline setup for a reliable AR fighting rifle:

• Operating System: Gas-operated, direct impingement (DI), not piston.
• Barrel:
  • 14.5″ chrome-lined or QPQ-lined
  • Pinned & welded flash hider or suppressor QD mount
  • 5.56 chamber, 1:7 or 1:8 twist (1:7 preferred)
• Handguard: 13″ free-float M-LOK handguard
• Bolt Carrier Group: C158 bolt, properly staked
• Receivers:
  • Standard forged upper with forward assist, brass deflector, and dust cover
  • Forged lower receiver with standard (non-ambi) safety selector
• Grip: Ergo Grip with gapper (or add a gapper to whatever grip you use)
• Buffer Tube & Stock: 6-position buffer tube, Magpul MOE or CTR stock
• Optic:
  • Red dot sight, 1–2 MOA dot
  • Absolute co-witness mount (on receiver only, not bridging the handguard)
  • Backup iron sights
• Other Essentials:
  • Weapon-mounted white light
  • Quality sling (Specter Gear 2- or 3-point recommended)
  • Minimum of 7 magazines per rifle (Lancer 30-round mags are my favorite)

Zero Recommendation: 36 yards or 50 yards for a versatile, effective zero.

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Training and Zeroing

Once your rifle is set up, shoot it often. Get comfortable with how it handles it should be light enough to move quickly but heavy enough for consistent hits at 300–400 yards.

• 36-yard zero: Point of impact will be close to point of aim out to 300 yards.
• 50-yard zero: Point of impact is slightly high at 100 yards, on at 250, low at 300–400.

As you shoot, learn your holdovers and holdunders at different distances. This is essential for confidence and consistency.

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Upgrades to Add Later

As your budget allows, consider upgrading:

• Magnifier: Flip-to-side magnifier for longer-range work.
• Charging Handle: Aero Breach or similar enhanced handle.
• Suppressor: Protects your hearing and improves control.

These upgrades will extend the usefulness of your rifle and make it more effective in varied situations.

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My Take on Ambi Safeties

As a right-handed shooter, ambi safeties hit my trigger finger and feel uncomfortable. Left-handed shooters can easily use the left-side selector, so adding ambi controls is optional. In my opinion, this is a training issue more than a hardware requirement but if you want one, go for it.

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Classes, Maintenance, and Mindset

Owning a rifle is one thing. Running a rifle is another. Get trained:

• Take a defensive rifle class.
• Practice manipulations (reloads, malfunction drills).
• Learn to clean and maintain your rifle.

When the day comes that you need it, you’ll want absolute confidence that it will work and that you know how to work it. -John