Rankin Industries Lower Parts Kit with SP4 Trigger Group
The headliner for this AR-15 Lower Parts Kit is the SP4 Trigger Group. SP4 is a hybrid DLC type coating that is the hardest, slickest, and most flexible coating on the market. It makes for a super nice trigger pull. Silky smooth with no grit at all. The trigger group is made of stainless steel and undergoes a special polishing process prior to getting the SP4 coating applied in an extreme vacuum. This is the latest and greatest coating for trigger groups and bolt carrier groups. The remainder of the kit includes a trigger guard and pistol grip. This kit includes all parts needed to complete lower receiver.