Traps unburned particles of powder until full combustion is completed. Short - M16A1-style, extends 1¾". Long - Soviet, AKM-style, extra length, maximum “burn”.
SPECS: Steel, blue (BL) or stainless steel (SS), matte finish. Short (SH) - 2½" (6.3cm) long, .860" (21.8mm) dia. Long (LG) - 3-3⁄8" (8.5cm) long, .860" dia. Models for Ruger 10/22®, Mini-14®, and Mini Thirty®. Mini-14 and Mini Thirty models will not fit recent production rifles with winged front sight.
Catalog page 164