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Close Up Diagram Cross-section Diagram The total upward pressure of a fully loaded magazine is equally distributed between the top first round and the pressure damper. The total amount of upward pressure of 40 rounds, divided by 2 should be less than the total amount of upward pressure...

Pressure Relief Valve (PSV) for standard Direct Impingement AR's. Standard Gas Block with integrated PSV Disassembly Diagram Belleville Springs Washers Reference (explaining the strength of spring washers)...

Advantages of this piston upgrade kit concept: 1. Same level of complexity as the standard AR gas piston system 2. Zero to Minimum modification required for installing this piston system to any standard AR platforms. 3. The installation of a folding stock on a standard AR is now possible. 4. A...

The conceptual diagram is quite self-explanatory. Advantage of this concept: 1. Utilize the same blow back gas for the entire reciprocating shell extraction and shell feeding cycle. 2. Require less materials to construct. 3. More simple design. 4. Majority of the gas vented through the...

There are two key features I would like to point out. 1. Thumb Screw Pressure Adjustor for different barrel length or suppressor setup. The thumb screw simply increase or decrease the internal blow back gas pressure for the appropriate operation. 2. Composite Piston Dish pushes the bolt...

I hope this help. http://www.youtube.com/watch?v=R6FaONUBRsQ&feature=feedrec_grec_index

Here is the overview diagram Basic idea It is an image relaying device which accepts image from the scope/sight viewfinder and relaying the image to the back monitor and two sides monitor. More advance model would have sensor for determining self position and dynamically turn on only one...

I would like to know why Free floating rail are made by expensive material like Aluminum? Is it possible to redesign the AR free floating rail using composite material? The requirements of composite free floating rail 1. Extremely light weight 2. Harder than Aluminum alloy. 3. Possibility of...

http://www.youtube.com/watch?v=j-q2zHIovOE&feature=feedrec_grec_index Would the 15 years kid got into any legal trouble?

http://www.youtube.com/watch?v=uhron05s1Ng&feature=feedrec_grec_index Would anyone find out more info about this weapon system? It looks extremely cool!

The Seal team who killed Osama bin Laden must be the best of the best among the Navy Seals. I am interested to know what kind of weapons would they bring with them for this mission? Would they take AR with them?

The Seal team who killed Osama bin Laden must be the best of the best among the Navy Seals. I am interested to know what kind of weapons would they bring with them for this mission? Would they take AR with them?

It seems that 5.56mm AR goods for long range penetration. The problem with 5.56mm is that it could potentially go through walls and hit innocent bystanders. But it does not have enough stopping power to knock down strong home intruders in close distance. Do you think my analysis is correct...

Is it possible to have a true 100% parallax free sight/scope (regardless of distance)?? 1. Mirror#1 to take what the a gunner would see through a view finder 2. Mirror#2 to reflect the image of Mirror#1 back to a gunner eyes 3. Superimpose a red dot on Mirror #2 before reflecting the...

Is it possible to have a true 100% parallax free sight/scope (regardless of distance)?? 1. Mirror#1 to take what the a gunner would see through a view finder 2. Mirror#2 to reflect the image of Mirror#1 back to a gunner eyes 3. Superimposed a red dot on Mirror #2 before reflecting the...

This is my very first AR 14.5" build. This build is designed for absolute beginner. I hope price vs performance/quality wise this is a decent build for a beginner. This AR is for range shooting and for a few tactical training courses. Total: $1040 BCM Standard 14.5" Mid Length (LIGHT WEIGHT)...

Would anyone able to recommend the best mini-reflex sight for under $400? This is going to be my backup sight for CQB Is this one any good? Burris Fastfire II reflex sight

I have been researching the effectiveness of full barrel silencers. A conventional silencer attaches the flash hider at a rear end of the silencer, but a full barrel silencer attaches the flash hider nearly at the front end of a FB silencer, which allow a good portion of AR barrel to be...

What would be the best or very good CQB-to-Mid Length AR sight/scope? My budget is $2000. I need one piece equipment and No Magnifier.

Is this build good enough for its price? Noveske 10.5" Light Shorty BASIC Upper with KX3 Suppressor (Dark Earth) + PCF C-15 Composite Lower + Noveske QD End Plate + Geissele S3G Trigger ($730+$119+$24+230=$1103) Daniel Defense 7.0 Omega Rail system ($269) REACT™ Short Vertical Grip (Dark...