This service is to convert your factory LMT Direct Impingement barrel to an adjustable gas block.
We recommend using a Superlative Arms adjustable gas block due to its compact size and symmetric shape.
**Please note that when you switch to an adjustable gas block, the style of gas tube will need to match the gas block**
Many AR15/AR10 gas blocks use a USGI bent style gas tube. There are some adjustable gas blocks like the Riflespeed or the SLR Jet that use straight tubes.