The "hollowed out" design was done to carefully match the weight to a 32 round magazine. When the mag extension is mounted on a 10 round pistol mag the combined weight is very close to a straight 32 round mag. We also designed it to be durable enough to withstand what you would normally see in a match situation.

Manufactured in Canada with Canadian magazine capacity laws in mind, these mag base plates add no extra capacity so there is no need to re-pin your mags. Simply remove the factory base pads and slide these ones on!

• +0 - 3" Mag extension for ASC 9mm AR-15 pistol mags
• Adds no capacity - No need to re-pin your mags.
• Easy to install!
• CNC machined from 6061 billet aluminum.
• Made in Canada!