Disassembling the Spike’s Tactical One-Piece Carrier with Bolt Assembly, we quickly see the differences between a dedicated piston bolt and carrier assembly, and one designed for the direct gas impingement AR15.




Taking a look at the front of the One-Piece Carrier, we see the lack of gas exhaust ports and typical carrier gas key found on the direct gas impingement carrier assembly. In place of the bolted on hollow gas key with gas passage, we have a solid one-piece integral key upon which the Drive Rod contacts during cycling.




The rear of the carrier is designed to eliminate the problems associated with “carrier tilt”, a problem often encountered with piston driven AR15s. The carrier is widened at the rear, chamfered to aid in cycling, and designed with two large “skis” at the bottom.