CURRENT LEAD TIME
CURRENT LEAD TIME
Orders typically ship same or next business day. Due to high demand our current lead time is 3-5 weeks.
30-DAY RISK FREE TRIAL
30-DAY RISK FREE TRIAL
We offer a 30 Day Money Back Guarantee! If you are not fully satisfied contact us within 30 days of product delivery and we'll issue a full refund upon the return of your order.
CHAMBER LOCKS
CHAMBER LOCKS
Couldn't load pickup availability

NO BATTERIES OR ELECTRONICS
ALL MECHANICAL DESIGN
Designed to prevent unintentional access while your firearm is at the ready. Our patented mechanical hand gesture code lock is instinctive to use in the dark and under stress.
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COMPATIBILITY NOTICE
Compatible with Mil-spec AR-15 Uppers.
May have compatibility issues with some PSA Uppers.
NOT COMPATIBLE WITH:
Ruger AR-556
Radian A-DAC
Upper Receiver
Juggernaut Tactical AR-15 Billet Upper
The Shotgun Chamber Lock is compatible with common pump 12 gauge shotguns such as the Mossberg 590 and Remington 870.
MATERIALS
• 6061 T6 Aluminum
• Type II and Type III Hard Anodized
COMBINATIONS
The StopBox comes with 6 configurable combinations,
or 81 with the Actuator Accessory Pack NOTE: We recommend sticking with the preset combination unless you have physical limitations. Our lock is not designed to stop someone with prior knowledge of the StopBox and how it works.
MADE IN USA
We proudly make our products here in the USA!
PATENTED LOCK
Patent No. 11,435,154
100% SATISFACTION GUARANTEED
"Try your StopBox RISK FREE for 30 days. If you're not satisfied for any reason, you may return your order for a full refund."
- DYLAN ERVIN, FOUNDER
6061 T6 ALUMINUM
TYPE II AND TYPE III HARD ANODIZED
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The ordering and shipping of the shotgun chamber lock from StopBox USA was easy and quick. It is a great quality product.
I am very happy with the quality of the product being all metal, feels strong and locks in tight. Even adding the rubber piece for around the chamber to not scratch it is amazing.
Heavy-duty, grippy, secure yet instantly accessible - there's no way any of my young children would figure out the combination, yet I can access my shotgun instantly. Two thumbs up! The only thing I would change would be to offer the option of a truly foolproof combination - perhaps a sequence of button pushes. StopBox, I know the StopBox is your flagship product, but please don't stop making and improving the Chamber Lock Pro!
this is great i need to buy like 3 more one for each car and my house works with my plr-16 from kel-tec also works great with my ar-15s
So didn’t exactly fit since this IWI Mafteah is brand new. But spoke directly with the team at StopBox and shared that it’s the rubber grommet that is too thick. I had to cut my grommet to reduce the thickness and it works! They are going to look at making a new molded grommet for this shotgun and when ready they would send me to try out. Great products and staff here!