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AR-15 Vise Blocks | Upper & Lower Receiver Tools
AR-15 Vise Blocks – Secure Your Build with Confidence
🛠️ Upper and Lower Receiver Blocks for Maintenance, Upgrades & Assembly
Whether you're installing a new barrel, cleaning your upper, or building your first rifle, a quality AR-15 vise block is essential. These tools let you lock your receiver in place without marring the finish or crushing the material. From clamshell-style upper blocks to magwell lower blocks and complete combo kits, Mounts Plus has the right solution to support your next project.
🔧 What Is an AR-15 Vise Block?
An AR-15 vise block is a support tool used to:
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✅ Secure your upper receiver for barrel nut or rail installation
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✅ Hold your lower receiver during trigger installs or pin work
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✅ Prevent damage from direct contact with vise jaws
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✅ Speed up builds, cleaning, and part replacement
Using a proper vise block saves time and ensures that you're not putting stress on delicate aluminum parts during high-torque work.
🔩 AR-15 Vise Block Types We Offer
🔹 Upper Receiver Vise Blocks
- Clamshell or top-strap designs
- Ideal for barrel installs and handguard upgrades
- Fits standard mil-spec and some billet uppers
🔸 Lower Receiver Vise Blocks
- Inserts into the magwell
- Perfect for pin installs, safety selector swaps, and trigger work
- Keeps the lower level and stable
🟢 Combo Kits
- Includes both upper and lower blocks
- Best for full builds and gunsmithing setups
- Offers the best value for first-time builders
📊 Quick Comparison: Upper vs Lower Blocks
| Feature | Upper Block | Lower Block |
|---|---|---|
| Best Use | Barrel nut, handguard work | Trigger, pin, and safety installs |
| Fit Location | Inside or around upper | Inserts into magwell |
| Compatibility | Mil-spec or billet (varies) | Fits most AR-15 lowers |
| Tools Needed | Standard vise | Standard vise |
🧰 How to Use an AR-15 Vise Block
- Choose the block that fits your task (upper or lower)
- Insert or clamp it securely around your receiver
- Place the block in a bench vise
- Apply torque or perform work without stressing the receiver
You’ll protect your rifle and improve precision during part installation or service.
❓ Frequently Asked Questions
Q: What’s the difference between an upper and lower vise block?
Upper blocks hold the upper receiver for tasks like barrel installs. Lower blocks secure the lower via the magwell for work like pin installation or safety fitting.
Q: Can I use the same block for billet receivers?
Some blocks are billet-compatible, but many are designed for mil-spec sizes. Always check fitment details before purchasing.
Q: Will using a vise block scratch my receiver?
No—most quality blocks are made from polymer or non-marring materials specifically to protect your rifle’s finish.
Q: Do I need a vise block for cleaning?
It’s not required but highly recommended. A vise block provides a stable, hands-free platform for bore cleaning or inspection.
🛒 Shop AR-15 Vise Blocks at Mounts Plus
Whether you're building from scratch or upgrading key components, our lineup of AR-15 vise blocks gives you the support and security you need. We carry trusted brands like Wheeler, VISM, and Aim Sports with options for every skill level and rifle configuration.