This Daniel Defense Critical Components kit contains frequently requested parts for your DDM4/AR15/M16, chambered in 5.56MM, 6.8 SPC or 300 Blackout, in one convenient package. The kit contains the following components:
Firing Pin
Firing Pin Retaining Pin
Bolt Gas Rings
Extractor Spring O-Ring
Extractor Spring Assembly
M4 Standard Extractor
Pivot Extractor Pin
Ejector
Ejector and Safety Detent Spring
Carbine Buffer Spring Retail Assembly
The Super 42 Rifle Length Spring for the M-16/AR-15, brings you the performance and user experience improvement of the Super 42 spring for your rifle length buffer tube. This unique spring design uses three independent strands of wire, that acts as a harmonic damper and energy absorber by allowing the springs to flex separately from each other. This flex helps displace excess energy which decreases the chance of spring failure and assists with making your M-16/AR-15 rifle more reliable while diminishing the “twang” sound from the butt-stock. The Geissele M-16/AR-15 Super 42 Rifle Length Spring works with a standard rifle length buffer and buffer tube.
Aero Precision’s line of Lower Parts Kits featuring Magpul™ Grips is designed to be versatile for your needs. Each kit is available with MOE® and MOE SL® Grip Options in Black and FDE. Buy with our tried and true mil-spec Fire Control Group or save for an upgraded trigger with our MINUS FCG offerings.
This AR15 Lower Parts Kit includes the components needed to assemble an Aero Precision AR15 Gen 2 Lower Receiver or similar mil-spec lower receiver. It features a Magpul MOE® Grip and Magpul MOE® Trigger Guard. See below for a full list of included components.
Includes:
Magpul MOE® Grip in Black
Magpul MOE® Trigger Guard in Black
Takedown Pin
Pivot Pin
Takedown/Pivot Detent
Takedown/Pivot Spring
Bolt Catch
Bolt Catch Buffer
Bolt Catch Roll Pin
Bolt Catch Spring
Magazine Catch Body
Magazine Catch Button
Magazine Catch Spring
Buffer Retainer
Buffer Retainer Spring
Safety Selector
Safety Selector Spring
Safety Selector Detent
4-40 Set Screw (for threaded takedown pin detent hole)
Trigger
Hammer
Trigger Spring
Trigger/Hammer Pins
Hammer Spring
Disconnector
Disconnector Spring
Planning to upgrade your trigger? Check out our AR15 Lower Parts Kit with Magpul™ MOE® Grip Minus FCG.
This lower parts kit is also available with a Magpul™ MOE SL® Grip.
ecessary Internal Components To Repair / Build / Rebuild a Custom Rifle The Geissele AR-15 Lower Parts Kit contains all 17 parts necessary to get your lower receiver operational - minus the trigger and pistol grip. Geissele is renowned for superbly designed, meticulously manufactured products, and these parts meet their high standards. Items in the AR-15 Lower Parts Kit are manufactured to "mil-spec" (M16 / M4) dimensions to ensure optimum fit and function in your AR rifle or carbine. The Geissele AR-15 Lower Parts Kit includes: Bolt catch Bolt catch plunger / spring / roll pin Mag release Mag release button Mag release spring Buffer retainer spring Safety Buffer retainer Safety detent & spring Triggerguard & roll pin Takedown detents & springs Pivot / takedown pins The fire control system - trigger, hammer, disconnector (and pins) - may be the most "personal" part of any custom AR-15. Along with the pistol grip, it’s the area most customizers and custom builders prefer to select very carefully. As a result Geissele omits both components from this AR-15 Lower Parts Kit so you don’t have to spend money on parts you won’t use!