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HS-Armory Barrel Lapping Kit Level 4


The latest development in pushing the limits of accuracy from HunterSeeker5 has arrived, the barrel lapping system. Some of you may have heard or even tried barrel polishing in the past and noticed it offers some advantage. Well polishing and lapping are not the same process. Where simple polishing removes micro scratches from the surface and improves surface finish it does not make any attempt at leveling the surface. Lapping uses abrasive embedded plates to file down high spots and level the surface while still leaving a mirror finish. This smoother surface on both the micro and macro level allows BBs to glide along the barrel with minimal disturbance and off axis spin. This system works great on both cheap stock barrels and high end Japanese barrels, while high end barrels have much better than stock tolerances they are still far from the surface you get from lapping. This is the level 4 kit so it includes everything needed for 6 levels of lapping, a extra coarse 20 micron grit perfectly levels even the largest surface defects in the barrel's surface, then the 10 and 5 micron bring the surface finish down to where the 1.5 and 0.5 micron can bring the surface finish up where the CrOX can be used to put on a mirror finish on any uncoated barrel. (The 0.5 micron and CrOX have some overlap in performance and are in fact much different in their actions, more on that here.) By uncoated I mean brass and stainless are fine while most aluminum aren't. These are the 8th gen version of the lapps that have single large area sections in a spiral pattern. They provide better leveling than previous versions and the spiral pattern allows them to cut more evenly around the circumference. The item picture is currently of the older gen laps. More information below:

NOTE: These kits have been upgraded with a single brass drive rod instead of the plastic drive rods.

1.25oz CrOX RTA abrasive
0.5 micron diamond lapping compound
1.5 micron diamond lapping compound
5 micron diamond lapping compound
10 micron diamond lapping compound
20 micron diamond lapping compound
10 Gen 8 high leveling laps
Alignment block
1 Brass drive rod


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  • Model: HSA-LV4-LAP
  • Shipping Weight: 0.8188lbs
  • 1 Units in Stock
  • Manufactured by: HS5

This product was added to our catalog on Sunday 29 September, 2013.