🔒 Connecticut Magazine Blocking Pinning Services (10-Round Compliance)
At WTW Arms, we offer permanent magazine modification services to ensure compliance with Connecticut’s 10-round capacity law. This service — commonly known as magazine pinning — permanently limits most standard capacity magazines to 10 rounds, allowing Connecticut residents to legally purchase and transfer eligible firearms.
If you are buying a firearm that ships with magazines exceeding Connecticut’s legal limit, we can professionally modify the magazine to meet state requirements before transfer.
What Is Magazine Blocking/Pinning?
Magazine pinning is a permanent internal modification that restricts a magazine’s capacity to 10 rounds.
At WTW Arms, we use:
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Industrial-grade epoxy
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Precision-fit internal 3D printed blocks
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Permanent capacity-limiting techniques
The result:
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Clean, factory-style appearance
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No external cosmetic damage
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Fully compliant 10-round capacity
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Permanent, non-reversible modification
⚠️ Important: This modification cannot be undone.
Who Needs Magazine Blocking in Connecticut?
This service is ideal for:
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Connecticut residents purchasing firearms that include magazines over 10 rounds
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Customers completing an FFL transfer in Connecticut
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Buyers ordering firearms online that ship with standard capacity magazines exceeding 10 rounds
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Anyone ensuring full compliance with Connecticut firearm laws
Add Magazine Pinning to Your Purchase or Transfer
We offer magazine pinning as:
✔ Add-on to FFL transfers
✔ Stand-alone service for firearms purchased through WTW Arms
✔ Compliance service before transfer completion
If you’re unsure whether your magazine qualifies, contact us before your transfer arrives.






