The ASP D2 Test (Inert) Insert for Metro Defender (ASP part no. 55111) is a replacement insert for ASP D2-size Defenders, the size formerly sold as the Key Defender insert. ASP recommends practicing with a Test insert before carrying a Defender with the active D2 insert installed. This single insert holds a harmless, inert aerosol.

Key Specifications

• This listing is a single Test (inert) insert, one practice refill.
• The formulation is a harmless, inert aerosol, made for practicing with your Defender without any active OC.
• The insert is precision machined from aerospace aluminum and solid brass and is O-ring sealed like the Heat insert.
• It uses the specially produced valve system and patented dispensing mechanism that ASP describes for its Defender inserts.
• It is compatible with Metro D2 and Sport D2 Defenders, and the older Key Defender takes the same insert size.

Frequently Asked Questions

What is a Test insert for? ASP offers Test inserts so you can safely function-test and practice with your Defender, and recommends practicing with one before carrying the active insert.

Does it contain pepper spray? No. It contains a harmless, inert aerosol.

Which Defenders does it fit? ASP Metro D2 Defenders and Sport D2 Defenders, plus the original Key Defender, which uses the same insert size.

Buy the ASP D2 Test (Inert) Insert for Metro Defender

Practice with the same hardware you carry and know how it behaves. Order it from our Lubbock, Texas gun shop for fast shipping, and see more of our pepper spray and OC range.