JP Drop-in .156" Small pin AR fire control kit including speed hammer, oversize anti-walk pins and adjustable/reversible selector.

AR-15 .154" Small pin trigger kit, complete with trigger, speed hammer,disconnector, over-sized anti-walk pins, adjustable/reversible and spring sets for .223 competition or duty applications and .308 (AR-10) applications.

• Standard
• The standard spring sets included in all JP Fire Control kits include the yellow hammer and trigger springs, which may be used for competition and recreational applications with hand loads or domestic made non-military ammunition. The yellow/yellow combination results in a release weight in the 3.0-3.5 lb range on most receivers. Also included Is the red hammer spring for use with military (5.56 NATO) or foreign manufactured ammo with low sensitivity primers. The red hammer spring MUST be used on any tactical duty (LE) installations and any AR-10 type installation for 100% ignition reliability. The yellow/red combination results in a release weight of 3.5-4.0 lbs on most receivers.