"The TDP"

When most people mention “TDP”, they are talking about the Colt M16A1 TDP. This is the O.G. that still defines most of the requirements for today’s AR-style military hardware.

We assume that you have read the GD&T and QC article, so you are familiar with the conventions and symbology. If not, please start there.

Below, you will find every drawing that we have been able to find for the TDP. We have been able to locate some newer versions of the drawings, which are the ones with isometric views. If you are interested in the originals of these, contact us and we can send you a link. If you find drawings that we don’t have, please submit them and we will get them posted for all to enjoy.

Disclaimer

The drawings provided below are provided for your entertainment and academic purposes. These drawings have been collected from all over the internet. As such, we were not the ones to release them to the general public.

However, if we are asked (by Colt, DoD, etc.) to remove any or all these drawings, we will do so. We sincerely hope that this will not happen, and we don’t see a very good reason if it does. Our government has sold, given, and abandoned some version of these arms in just about every country in the world. If anyone, anywhere wanted to manufacture the M16, they have already reverse engineered it; they would not need 50+ year old technical drawings.

For now, we hope these drawings contribute to your enjoyment of this incredible weapon system.

Lower Receiver (78 Items)

	Drawing Name	Component Group
Drawing #	Drawing Name	Component Group	Drawing Description	Drawing Link
8448628	Catch, Bolt	Bolt Catch	Bolt Catch
8448633	Spring, Bolt Catch	Bolt Catch	Bolt Catch Spring
8448634	Plunger, Bolt Catch	Bolt Catch	Bolt Catch Buffer
8448615	Buffer Assembly	Buffer System	Buffer Assembly (Rifle)
8448616	Body, Buffer	Buffer System	Buffer Body (Rifle)
8448617	Weight, Buffer	Buffer System	Buffer Weight
8448618	Disc, Buffer	Buffer System	Buffer Disc
8448619	Bumper, Buffer	Buffer System	Buffer Bumper
8448620	Spacer, Buffer	Buffer System	Buffer Spacer
8448582	Retainer, Buffer	Buffer System	Buffer Retainer Pin
8448583	Spring, Buffer Retainer	Buffer System	Buffer Retainer Spring
8448629	Spring, Action	Buffer System	Buffer Spring (Rifle)
8448581	Extension, Receiver	Buffer System	Rifle Receiver Extension
8448652	Swivel	Buttstock	Sling Swivel
8448653	Hinge	Buttstock	Buttstock Storage Door Hinge
8448655	Pin	Buttstock	Buttstock Storage Door Hinge Pin
8448659	Spring, Helical, Compression	Buttstock	Buttstock Storage Door Plunger Spring
9349119	Buttstock, Assembly, Stowage	Buttstock	Buttstock Assembly
9349120	Screw, Swivel	Buttstock	Buttstock Sling Swivel Screw
9349121	Buttstock	Buttstock	Buttstock
9349128	Screw, Butt cap	Buttstock	Butt Plate Screw
9349130	Butt Plate Assy	Buttstock	Butt Plate Assembly
9381378	Plunger	Buttstock	Butt Plate Door Plunger
9381379	Door	Buttstock	Butt Plate Door
9381380	Door Assembly, Thumb Latch	Buttstock	Butt Plate Door Assembly
12597640	Spacer, Buttcap	Buttstock	Butt Cap Spacer
8448591	Trigger Assembly	Fire Control Group	Trigger Assembly
8448592	Trigger	Fire Control Group	Trigger
8448593	Spring, Trigger	Fire Control Group	Trigger Spring
8448594	Spring, Disconnect	Fire Control Group	Disconnector Spring
8448595	Automatic Sear, Assembly	Fire Control Group	Auto Sear Assembly
8448596	Sear, Automatic	Fire Control Group	Auto Sear
8448597	Bushing, Automatic Sear	Fire Control Group	Auto Sear Bushing
8448598	Spring, Automatic Sear	Fire Control Group	Auto Sear Spring
8448599	Pin, Automatic Sear	Fire Control Group	Auto Sear Pin
8448609	Pin, Hammer & Trigger	Fire Control Group	Hammer/Trigger Pin
8448610	Hammer Assy	Fire Control Group	Hammer Assembly
8448611	Spring, Hammer	Fire Control Group	Hammer Spring
8448612	Hammer and Hammer Pin Retainer Assembly	Fire Control Group	Hammer Assembly
8448613	Hammer	Fire Control Group	Hammer
8448614	Retainer, Hammer Pin (J-Spring)	Fire Control Group	J-Spring
8448635	Disconnect	Fire Control Group	Disconnector
9349106	Hammer Assembly	Fire Control Group	Hammer Assembly
9349107	Spring, Hammer	Fire Control Group	Hammer Spring
9349108	Cam, Burst (3 Shot)	Fire Control Group	3 Round Burst Cam
9349109	Spring, Clutch	Fire Control Group	Clutch Spring
9349110	Hammer & Hammer Pin Retainer Assembly	Fire Control Group	Hammer Assembly
9349111	Hammer	Fire Control Group	Hammer
9349113	Disconnect-Burst	Fire Control Group	Disconnector (3 Round Burst)
9349114	Disconnect-Semi	Fire Control Group	Disconnector (Semi Auto)
9349115	Trigger Assembly	Fire Control Group	Trigger Assembly
9349116	Spring, Disconnect	Fire Control Group	Disconnector Spring
9390736	Trigger	Fire Control Group	Trigger
9392518	Trigger, Sub-assembly	Fire Control Group	Trigger Assembly
8448516	Spring, Ejector and Safety Detent	Fire Control Group	Safety Detent Spring
8448631	Detent, Fire Control Celector	Fire Control Group	Safety Detent
9381367	Selector, Fire Control	Fire Control Group	Safety Selector
8448636	Button, Magazine Release	Magazine Catch	Magazine Release Button
8448637	Spring, Magazine Catch	Magazine Catch	Magazine Catch Spring
8448638	Catch, Magazine	Magazine Catch	Magazine Catch Assembly
8448639	Plate, Magazine Catch	Magazine Catch	Magazine Catch Plate
8448640	Shaft, Magazine Catch	Magazine Catch	Magazine Catch Shaft
9349127	Grip, Pistol	Pistol Grip	Pistol Grip
8448584	Pin, Takedown	Pivot/Takedown	Takedown Pin
8448585	Detent, Takedown Pin	Pivot/Takedown	Pivot/Takedown Detent
8448586	Spring, Detent, takedown Pin	Pivot/Takedown	Pivot/Takedown Detent Spring
8448621	Pin, Receiver Pivot	Pivot/Takedown	Pivot Pin
8448578	Lower Receiver And Buttstock Assembly	Receiver	Lower Receiver and Buttstock
8448579	Lower Receiver and receiver extension assembly	Receiver	Lower Receiver and Receiver Extension
8448580	Receiver, Lower, Model M16A1	Receiver	Lower Receiver (M16A1)
8448608	Receiver, Lower	Receiver	Lower Receiver
8448641	Lower Receiver Forging	Receiver	Lower Receiver Forging
9349100	Lower Receiver and Buttstock Assembly	Receiver	Lower Receiver and Buttstock
9349101	Lower Receiver and receiver extension assembly	Receiver	Lower Receiver and Receiver Extension
8448587	Trigger Guard Assembly	Trigger Guard	Trigger Guard Assembly
8448588	Guard, Trigger	Trigger Guard	Trigger Guard
8448589	Plunger, Trigger guard	Trigger Guard	Trigger Guard Plunger
8448590	Spring, Trigger Guard	Trigger Guard	Trigger Guard Spring

Upper Receiver (85 Items)

		Component Group
Drawing #	Drawing Name	Component Group	Drawing Description	Drawing Link
8448548	Barrel and Extension Assembly	Barrel	Barrel Assembly
8448549	Barrel	Barrel	Barrel
8448551	Pin, Barrel indexing	Barrel	Barrel Indexing Pin
8448553	Nut, Barrel	Barrel	Barrel Nut
8448711	Barrel Nut Assy	Barrel	Barrel Nut Assembly
8448501	Bolt Carrier Assembly	Bolt Carrier Group	Bolt Carrier Assembly
8448502	Pin, Cam	Bolt Carrier Group	Cam Pin
8448503	Pin, Firing	Bolt Carrier Group	Firing Pin
8448504	Pin, Retaining, Firing Pin	Bolt Carrier Group	Firing Pin Retaining Pin
8448505	Key and Bolt Carrier Assembly	Bolt Carrier Group	Bolt Carrier and Gas Key Assembly
8448506	Key, Bolt Carrier	Bolt Carrier Group	Gas Key
8448507	Carrier, Bolt	Bolt Carrier Group	Bolt Carrier
8448508	Screw, Cap, Hex Socket Head	Bolt Carrier Group	Gas Key Screws
8448509	Bolt Assembly	Bolt Carrier Group	Bolt Assembly
8448510	Bolt	Bolt Carrier Group	Bolt Head
8448511	Ring, Bolt	Bolt Carrier Group	Gas Ring
8448512	Extractor	Bolt Carrier Group	Extractor
8448513	Pin, Extractor	Bolt Carrier Group	Extractor Pin
8448515	Ejector	Bolt Carrier Group	Ejector
8448516	Spring, Ejector and Safety Detent	Bolt Carrier Group	Ejector Spring
8448753	Spring, Extractor	Bolt Carrier Group	Extractor Spring
8448755	Spring Assy, Extractor	Bolt Carrier Group	Extractor Spring Assembly
12011849	Bolt Carrier Assembly	Bolt Carrier Group	Bolt Carrier Assembly
12972691	Bolt Assembly	Bolt Carrier Group	Bolt Assembly
12972692	Spring Assy, Extractor	Bolt Carrier Group	Extractor Spring Assembly
12972693	Buffer, Extractor	Bolt Carrier Group	Extractor Insert
8448517	Charging Handle Assy	Charging Handle	Charging Handle Assembly
8448518	Handle, Charging	Charging Handle	Charging Handle
8448519	Latch, Charging Handle	Charging Handle	Charging Handle Latch
8448520	Spring, Charging handle latch	Charging Handle	Charging Handle Latch Spring
8448521	Pin, Spring	Charging Handle	Charging Handle Roll Pin
8448647	Charging Handle Forging	Charging Handle	Charging Handle Forging
8448525	Ejection Port cover Assy	Dust Cover	Ejection Port Dust Cover Assembly
8448532	Spring, Cover	Dust Cover	Ejection Port Dust Cover Spring
8448533	Pin, Cover, Hinge	Dust Cover	Ejection Port Dust Cover Hinge Pin
8448783	Ejection Port Cover and Latch Housing Assy	Dust Cover	Ejection Port Dust Cover Assembly
8448784	Housing ,Cover latch	Dust Cover	Ejection Port Dust Cover Latch Housing
8448785	Cover, ejection port	Dust Cover	Ejection Port Dust Cover
8448786	Latch, Cover	Dust Cover	Ejection Port Dust Cover Latch
8448787	Spring, Cover Latch	Dust Cover	Ejection Port Dust Cover Latch Spring
8448521	Pin, Spring	Forward Assist	Forward Assist Pawl Roll Pin
8448540	Spring, Plunger	Forward Assist	Forward Assist Spring
8448542	Spring, Bolt	Forward Assist	Forward Assist Bolt Spring
8448543	Pawl, Forward Assist	Forward Assist	Forward Assist Pawl
8448544	Detent, Pawl	Forward Assist	Forward Assist Pawl Detent
8448546	Plunger	Forward Assist	Forward Assist Plunger
9349084	Cap, Plunger	Forward Assist	Forward Assist Plunger Cap
9349085	Plunger Assembly	Forward Assist	Forward Assist Plunger Assembly
9349086	Forward Assist Assembly	Forward Assist	Forward Assist Assembly
8448567	Gas Tube Assembly	Gas Tube	Gas Tube Assembly
8448570	Plug, Gas Tube	Gas Tube	Gas Tube Plug
8448555	Spring Weld Assembly, Hand guard slip ring	Handguard	Handguard Spring Assembly
8448556	Spring Section, Hand Guard Slip Ring	Handguard	Handguard Spring Section
8448564	Cap, Handguard	Handguard	Handguard Cap
8448712	Slip Ring, Hand Guard	Handguard	Handguard Slip Ring
9349059	Handguard Assembly	Handguard	Handguard Assembly
9349060	Handguard	Handguard	Handguard
9349061	Liner, Handguard	Handguard	Handguard Liner
9349051	Compensator	Muzzle Device	A1 Flash Hider
9349052	Spacer, Compensator	Muzzle Device	Muzzle Device Spacer
8448522	Upper Receiver and Barrel Assembly	Receiver	Upper Receiver and Barrel Assembly
8448523	Upper Receiver Assembly	Receiver	Upper Receiver Assembly
8448524	Receiver, Upper	Receiver	Upper Receiver
12576280	Receiver, Upper	Receiver	Upper Receiver
8448534	Screw, rear sight windage	Sight	Rear Sight Windage Adjustment Screw
8448537	Detent, Rear Sight	Sight	Rear Sight Detent
8448538	Spring, Rear Sight Detent	Sight	Rear Sight Detent Spring
8448539	Sight, Rear	Sight	Rear Sight
8448565	Sight and Gas Tube Assy	Sight	Front Sight and Gas Tube Assembly
8448566	Sight, Front	Sight	Front Sight
8448571	Swivel, Sling	Sight	Sling Swivel
8448573	Detent, Front Sight	Sight	Front Sight Detent
8448574	Spring, Front Sight Detent	Sight	Front Sight Detent Spring
8448575	Pin, Taper, Front Sight	Sight	Front Sight Taper Pin
8448643	Front Sight Forging	Sight	Front Sight Forging
8448697	Rivet	Sight	Front Sling Swivel Rivet
9349056	Post, Front Sight	Sight	Front Sight Post
9349065	Screw, Index	Sight	Rear Sight Index Screw
9349069	Spring, Index	Sight	Rear Sight Index Spring
9349070	Spring, Elevation	Sight	Rear Sight Elevation Spring
9349074	Base, Rear Sight	Sight	Rear Sight Base
9349075	Sight, Rear	Sight	Rear Sight
9349076	Screw, Windage	Sight	Rear Sight Windage Adjustment Screw
9349077	Knob, Windage	Sight	Rear Sight Windage Adjustment Knob
12011987	Spring, Rear Sight	Sight	Rear Sight Spring

Other (9 Items)

	Assembly			Drawing Name
Drawing #	Assembly	Drawing Description	Drawing Link	Drawing Name
8448670	Magazine	Magazine Assembly		Magazine Assy, 30 round
8448671	Magazine	Magazine Spring		Spring, Magazine, 30 round
8448673	Magazine	Magazine Bottom Plate		Plate, Bottom, Magazine
8448674	Magazine	Magazine		Box, Magazine, 20 Round
12011994	Magazine	Magazine Follower		Follower, Magazine, Plastic
8448500	Rifle	M16A1 Rifle		Rifle Assembly, M16A1
9349000	Rifle	M16A2 Rifle		Rifle, 5.56 MM, M16A2
9349122	Rifle	Plastic Compound		Plastic, Compound
12624561	Rifle	Sling		Sling, Adjustable, Small Arms

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