MDT Polymer Magazines - Black
MDT Polymer Magazines - Black

Polymer Magazines - Black

C$39.99 Excl. tax

Polymer MDT External Box Magazines for our TAC21 and LSS Chassis systems. Also works in many other M24 type chassis and bottom metals.

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Article number: 102231-BLK
Availability: In stock


MDT Detachable box magazines are designed to fit the MDT TAC21 and LSS Chassis systems, as well as many other M24 type chassis and bottom metals. Manufactured from high quality Polymer and uses a tempered steel spring. Available in .223 and .308

We put our magazines through vigorous testing. We have used high quality strength polymer with a high glass content to ensure durability and strength. Although not unbreakable, we have driven over these magazines with cars and trucks which did not break them.


.308 magazine: 8 rounds 
.223 magazine: 10 rounds

MAX OAL .223: 2.550"
MAX OAL .308: 2.800"


Our magazines are guaranteed to work in our TAC21, LSS, LSS-XL, HS3, and ESS chassis systems. They do not work with the following inlets; Ruger American in 204/223/556, Browning X-bolt, Winchester XPC and may require fitting in Winchester Model 70 .
Based on customer feedback, the following systems work well with our magazines, but fitting may be required in some cases.

Accuracy International Chassis (Not using the AI action)
XLR Chassis
KRG X-Ray - Some need adjustment.
GRS riflestocks- (Configured for AICS magazines)
CDI Precision bottom metals- (Configured for AICS magazines)
Pacific tool and Gauge bottom metals- (Configured for AICS magazines) 


6.5 Creedmoor

Not recommended for .300 WSM. Use a metal magazine for this caliber as the feedlips need adjustment.


.223 Magazine will accomodate the following cartridges but may require feed lip adjustments and modifications to the internal ribs. 

300 Blackout
.204 Ruger

.223 Polymer magazines will work the Magpul Hunter stock with detachable Magazine. Minor adjustment of magazine height may be required. 

Please contact us if you have tried other calibers in our magazines.

*Magazines are sold individually. Ammunition not included.

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