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title: FAQs | Knowledge Base
description: Find answers to our most common questions.
---
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1. [Knowledge Base](https://support.cmmg.com/)
2. [FAQs](https://support.cmmg.com/faqs)
# FAQs
Find answers to our most common questions.
- [Does CMMG have 9mm magazine inserts?](https://support.cmmg.com/does-cmmg-have-9mm-magazine-inserts)
- [CMMG Mk3 Platform Specifications](https://support.cmmg.com/cmmg-mk3-platform-specifications)
- [CMMG Mk4 platform specifications](https://support.cmmg.com/cmmg-mk4-platform-specifications)
- [What is a MkGs?](https://support.cmmg.com/what-is-a-mkgs)
- [What is a Mk57?](https://support.cmmg.com/what-is-a-mk57)
- [What model firearms are legal in my state?](https://support.cmmg.com/what-model-firearms-are-legal-in-my-state)
- [What are the lead times on these new products?](https://support.cmmg.com/what-are-the-lead-times-on-these-new-products)
- [How do I return an item for repair?](https://support.cmmg.com/how-do-i-return-an-item-for-repair)
- [Are all CMMG products covered under the Lifetime Quality Guarantee?](https://support.cmmg.com/are-all-cmmg-products-covered-under-the-lifetime-quality-guarantee)
- [Who do I contact if I have questions about a product?](https://support.cmmg.com/who-do-i-contact-if-i-have-questions-about-a-product)
- [Will a 9 AR Conversion Magazine work in a blowback 9mm AR?](https://support.cmmg.com/will-a-9-ar-conversion-magazine-work-in-a-blowback-9mm-ar)
- [What is a Mk4?](https://support.cmmg.com/what-is-a-mk4)
- [What is a Mk3?](https://support.cmmg.com/what-is-a-mk3)
- [What is a Mk9?](https://support.cmmg.com/what-is-a-mk9)
- [CMMG Mk9 Platform Specifications](https://support.cmmg.com/cmmg-mk9-platform-specifications)
- [What is a MkG?](https://support.cmmg.com/what-is-a-mkg)
- [CMMG MkG, MkGs, & Mk57 Platform Specifications](https://support.cmmg.com/cmmg-mkg-mkgs-mk57-platform-specifications)
- [What handguards fit my gun?](https://support.cmmg.com/what-handguards-fit-my-gun)
- [What is DI (Direct Impingement)?](https://support.cmmg.com/what-is-di-direct-impingement)
- [What is TB (Traditional Blowback)?](https://support.cmmg.com/what-is-tb-traditional-blowback)
- [What is Radial Delayed Blowback?](https://support.cmmg.com/what-is-radial-delayed-blowback)
- [Will the RipStock/RipBrace work on my gun?](https://support.cmmg.com/will-the-ripstock/ripbrace-work-on-my-gun)
- [What does "ALL NFA RULES APPLY" mean?](https://support.cmmg.com/what-does-all-nfa-rules-apply-mean)
- [What is P3?](https://support.cmmg.com/what-is-p3)
- [What is Fastback Technology?](https://support.cmmg.com/what-is-fastback-technology)
- [Has the RipBrace been approved by the ATF?](https://support.cmmg.com/has-the-ripbrace-been-approved-by-the-atf)
- [I bought a CMMG conversion kit, will it work in my gun?](https://support.cmmg.com/i-bought-a-cmmg-conversion-kit-will-it-work-in-my-gun)
- [Does the .223/5.56 to 22LR conversion kit work in .223 Wylde chambers?](https://support.cmmg.com/does-the-.223/5.56-to-22lr-conversion-kit-work-in-.223-wylde-chambers)
- [What steps do I need to take to turn my conversion kit into a dedicated upper group?](https://support.cmmg.com/what-steps-do-i-need-to-take-to-turn-my-conversion-kit-into-a-dedicated-upper-group)
- [I’ve lost my owner’s manual, where can I find a replacement?](https://support.cmmg.com/ive-lost-my-owners-manual-where-can-i-find-a-replacement)
- [How do I get a job at CMMG?](https://support.cmmg.com/how-do-i-get-a-job-at-cmmg)
- [How often should I clean my gun?](https://support.cmmg.com/how-often-should-i-clean-my-gun)
- [Why does my magazine sometimes fall out?](https://support.cmmg.com/why-does-my-magazine-sometimes-fall-out)
- [Who do I contact if my product is missing parts?](https://support.cmmg.com/who-do-i-contact-if-my-product-is-missing-parts)
- [Do you offer a Military or LEO discount?](https://support.cmmg.com/do-you-offer-a-military-or-leo-discount)
- [10mm Case Bulging?](https://support.cmmg.com/10mm-case-bulging)
- [Are CMMG .350 Legend magazines compatible with other manufacturers uppers/ARs?](https://support.cmmg.com/are-cmmg-.350-legend-magazines-compatible-with-other-manufacturers-uppers/ars)
- [Is my CMMG firearm Direct Impingement or Radial Delayed Blowback?](https://support.cmmg.com/is-my-cmmg-firearm-direct-impingement-or-radial-delayed-blowback)
- [California Firearms Excise Tax](https://support.cmmg.com/california-firearms-excise-tax)
- [Serial Number Lookup](https://support.cmmg.com/serial-number-lookup)
- [What Is Compliant In My State?](https://support.cmmg.com/what-is-compliant-in-my-state)
- [Is CMMG doing a Black Friday sale?](https://support.cmmg.com/is-cmmg-doing-a-black-friday-sale)
- [What is the thread pitch on my CMMG's threaded barrel?](https://support.cmmg.com/what-is-the-thread-pitch-on-my-cmmgs-threaded-barrel)
- [What is 9mm available in?](https://support.cmmg.com/what-is-9mm-available-in)
- [What magazine does each CMMG platform use?](https://support.cmmg.com/what-magazine-does-each-cmmg-platform-use)
- [What does P&W mean?](https://support.cmmg.com/what-does-pw-mean)
- [How do I become a dealer?](https://support.cmmg.com/how-do-i-become-a-dealer)
- [What is the minimum order quantities to become a dealer?](https://support.cmmg.com/what-is-the-minimum-order-quantities-to-become-a-dealer-and-what-is-the-dealer-discount)
- [What Cerakote colors do you offer?](https://support.cmmg.com/what-cerakote-colors-do-you-offer)
- [What happened to the 100, 200, and 300 series?](https://support.cmmg.com/what-happened-to-the-100-200-and-300-series)
- [Does CMMG still make .458 SOCOM?](https://support.cmmg.com/does-cmmg-still-make-a-.458-socom)
- [What is the difference between the 100, 200, and 300 series?](https://support.cmmg.com/what-is-the-difference-between-the-100-200-and-300-series)
See less ▼
- [Common Product Questions](https://support.cmmg.com/common-product-questions)
- [FAQs](https://support.cmmg.com/faqs)
- [DEFCAN](https://support.cmmg.com/defcan)
- [DISSENT](https://support.cmmg.com/dissent)
- [BANSHEE](https://support.cmmg.com/banshee)
- [RESOLUTE](https://support.cmmg.com/resolute)
- [ENDEAVOR](https://support.cmmg.com/endeavor)
- [Lead Times](https://support.cmmg.com/lead-times)
- [Dealer/OEM](https://support.cmmg.com/dealer-oem)
[](https://support.cmmg.com)
support.cmmg.com Knowledge Base
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