Sunday, April 13, 2014

Bushmaster ACR Color Matching (April 21, 2014)

Trying to color match my FDE (Coyote) ACR with Duracoat.   Bushmaster is backlogged on the Enhanced Rail and I picked up a black one that I want to match to the upper.

As you can see, the color Duracoat sells as ACR Handguard Brown is NOT the color of the ACR.  This is a major bummer because Duracoat colors don't line up at all to what the name implies.

Blog Organizational Change

I've added a new section called New Projects.

Links to older projects are here -

22lr coversion kit summary -

HK416D 22LR Umarex -

Glock 21SF Stipple (April 2014)

This was done in about 3 hours going over the factory grip areas with a soldering iron.  The job is pretty simple and on a scale of 1 - 10 in difficulty this is a 5.  The Glock plastic is "softer" than the Magpul plastic - it has a tendency to "melt" at a lower temperature so if you are going to do your Glock, test and go carefully.  Again the trick to a great stippling project is patience and more patience.  Go slow, go right!

Overall the grip was reduced about 1/8 inch.  I used a Dremmel tool to polish down the factory humps by masking off the areas that I didn't want to hit.  The masking is needed in case your hand jitters and you don't want to grind outside the area you want ground.

Enjoy and happy stippling!

Bushmaster ACR Stippling (March 2014)

This is my Bushmaster ACR basic handguard stipple.  I originally wanted the Enhanced ACR but the damned things were out of stock for months (in FDE).  The basic guard is actually about 3 - 4 inches longer and fits me much better than the shorter enhanced aluminium one (I got the aluminum one later).

Stippling added a ton of hand traction on the factory hand guard.  If you have a basic ACR, this is a must do IMHO.  It looks great, feels great and aids in weapon manipulation.  Again, patience and more patience is needed.

Mask off your lines!  Do the outline first and then fill in.  It goes much faster.  Doing it without masking is asking for a messy job!

Shots of my plain old Gen 3 Glock 21.  It is for sale if you are on calguns (sorry no shipping).

Multicam painted M4 Carbine (June 2013)

This project was a 80% build off a Quentin Defense billet lower.  It has an Ergo carbine rail.  It is painted in Duracoat.  The barrel is painted in high-temp Duracoat.  The process took 2 days on and off and baked between coats of paint.  It used a 3 layer reverse masking technique.  You spray, mask and then paint over, mask, etc....  In the end, the pattern and color came out awesome!  

As for the debate between "hardness" of Cerakote and Duracoat - It is all BS.  Both will chip and both fill fail with time - it is just epoxy paint.  I have a Cerakoted AR that has seen about 1,000 rounds and the paint on the brass deflector is pretty much beat up and gone.  I have another AR that I did using Duracoat and also has 1,000 rounds through it over the past few months and it is equally beat up.  Both paint types will chip and scratch.  Go for the one that you like better.  Duracoat is easier to work with IMHO.  No flashing is needed and to do this in Cerakote would have taken a full week!

Stippling XTM panels (June 2013)

Since Magpul released the Gen 2 XTM which are pre-stippled, the only ones left doing are the old ones.  This is great practice material for bigger projects like my ACR handguard and Glock 21SF.

IMHO, the Gen 2 Panels aren't nearly as grippy as the ones that I did.

Class of AR 2012 - 2014

Here is a group stack picture of my AR builds.  Including my HK416D.  All of my rifles include the BAD ambi levers.  IMHO this is a must have upgrade if you are using your rifle and doing any type of move drills.  Move - switch to safe ALWAYS.  All have KNS anti rotation pins.


A group shot of my pistols.  Since this was taken, I've added a Gen 3 21SF, Gen 4 G17.  Looking to get a Sig P6/P225.

Fortis Rail + BCM light weight barrel and BCM Gas Block

So this was one of my older projects using a BCM barrel and gas block on a mid-length gas system.  I didn't understand why the gas block has a gap.  It has a gap because it expects the forward hand guard ring to be there but when you are using a monolithic rail, that part isn't used.

The Fortis rail is one of the best!  Keymod is awesome and the rail is one of my favorites.  My Daniel Defense rails well, feel old school and heavy as crap.  DD RIS2 is pretty awesome though and if they came out with a Keymod version - that would rock.

Forward hand guard gap more clearly seen.

300BLK 80% Build

I built this rifle with a Fortis hand guard, 80% TM forged lower and engraved with all the Magpul China Doll goodies.  I found a NRA friendly engraver in San Jose and he did an awesome job.  Now, I have a 300BLK China Doll AR.  And the best part, I didn't spend $3,000 on the lower!

This AR has seen about 2,000 rounds through it.  CMMG Nitride barrel (a must have, forget chrome lined).  Tac driver to 200 yards.  AAC 18T on the end also Nitride treated.

Cerakote is holding up well except at the brass deflector.  If you get your rifle painted by someone else, make sure they don't bead blast the anodization off.

300BLK Magpul Lower logo shot

Thursday, April 21, 2011

New Projects and Pics

First 300BLK Build

300BLK in 16" DSA barrel.  DD Lite Rail 14".  Billet 80% Quentin Defense lower engraved with Magpul China Doll goodness.  This is a very old pic and the rifle doesn't look like this anymore.  It has a Magpul UBR and a Leupold 1x4 scope with Larue quick release forward cant mount.

300BLK is very soft shooting and its fun to pump a 30cal bullet out the pipe to hit a nice steel target.

Old XM177 DPMS upper - 20 years old was cool when it was cool.  Loud as crap and without a brass deflector, the brass hit your face plenty of times.  It sucked bad - hot brass in da face.  Good luck to the Calgunner who wanted this thing.  Warned him but oh well.....

Old A2 upper disassembled - Duracoated in flat black.  Looks better than new!  Sold as a used part a long time ago.

My Old AR that are long SOLD!

They found new homes

Recently I've been stuck building ARs or M4s.  So easy.  Not that expensive but ammo is.  Here are a couple of pictures of my latest builds.

I'd get a HK416 Upper but I don't have $7,000 to spend on just one upper.

The M4s below cost less than $900 to build (before optics).  Now to add a CMMG 22LR Evolution conversion kit.  Actually my next rifle will be a dedicated 22LR shooter to complement these.  Hopefully by early May it will be done.

- EOTech 557/223
- EOTech 3X Magnifier with Flip to Side
- Troy 2 Piece Quad Rail - Flat Dark Earth
- Magpul MOE Grip
- Magpul CTR Stock
- Magpul MBUS

XM177 (in Green below)
- EOTech XPS2-0
- Daniel Defense Quad Rail
- Magpul AFG1
- Magpul MOE Grip and Stock
- Magpul MBUS

Thursday, April 14, 2011

Most people think that there's little difference between a 22LR and a 223/5.56 round.  Caliber is almost the same that's why you can get a 22LR conversion kit and drop it into any AR15/M16/M4.  It works and works pretty good.

Here's a little table that demonstrates the difference between the two in terms of velocity (average muzzle), mass and Energy (Joules).

Velocity ft/sec Weight (g) Energy (J)
22LR High Velocity  1,328  36  159
5.56x45 SS109  3,035  55  1,435

The 223/5.56 round has 9X or 900% more energy than a 22LR.  That's a huge difference.
For me shooting paper targets at the range using 223/5.56 is just throwing money away.  Its almost $.25 ever time you pull the trigger.

Next purchase is a CMMG India Evolution 22LR conversion kit for my XM177.

Wednesday, April 13, 2011

New 22LR version of US M9 by Chiappa Arms

Looks like the 22LR world just got a little bigger with the announcement of another 22LR pistol from a big brother Beretta 92/M9. I already have a M9 but this looks like another one I just might pick up. I'll see if I can find it locally and if its good quality, I'll plop down the $400 or so to get it.

More on it from Chiappa Arms

Tuesday, April 12, 2011

Fun factor

No doubt some of you have read about the fun factor of the HK in 22LR. It is very fun. When I go to the range, I'm usually surrounded by a bunch of 5.56 AR-15s of all sorts - long barrel, carbine, etc... All of them are firing slowly because each trigger pull on average costs at least a quarter ($.25).

Me, I blast away happily with my HK and for $20.00, I get to shoot over 500 rounds all day long.

Accuracy, I'm very pleased with it. With the EOTech, I'm able to place them in the bulls eye almost all the time from 50 to 100 yards out. We're also one of the lucky ranges here to have a tin-can area and its so fun.

I'm not an operator. I'm not likely to become an operator any time soon. So for us Mall Ninjas, this is a great rifle that doesn't break the bank and easy to work with.

Cleaning has been a bit of a pain since some areas in the upper receiver make it very hard to get your fingers and or a brush into. More on that later in my customization section.

The only bummer is the buffer tube which will never be easy to replace since it is a very custom tube on the inside. I thought about modding this part, but it would require that I tap out the entire rear of the lower receiver and it would not be an easy job.

Monday, April 11, 2011

Overview and Review of the HK416D 22LR

Click on image for a larger view.

Hi,  this is an overview of the HK416D145RS or the 22LR replica of the HK416 rifle.

This rifle is made by Walther and imported into the US via UMAREX USA.  The rifle will be stamped with the HK trademarks but on the right side of the receiver will be the Walther/UMAREX marks.


Caliber .22 L.R.
Capacity 10 or 20 rds
Mode of Fire Semi-Auto
Barrel Length 16.1 in (410 mm)
Barrel Twist 1 in 13-3/4 in
Rifling Grooves 6
Rifling Length 13.78 in (350 mm)
Front Sight Fixed - Removeable Post
Rear Sight Adjustable - Windage & Elevation
Overall Length 32.75-35.25 in (830-895 mm)
Overall Height w/Mag 11.4 in (290 mm)
Overall Width 3 in (75 mm)
Stock Style Adj. Telestock
Trigger Type Single-stage
Trigger Pull 6.6-9.9 lbs
Safety Type Manual
Principal of Operation Blowback
Muzzle Thread M8x.75
Length of Pull 11.5-14.625 in (290-370 mm)
Sight Radius 13.5 in (345 mm)
Diameter Rear Sight Aperture .1 / .12 / 0.14 / 0.24 in
Front Sight Width .06 in (1.5 mm)
Weight w/out Mag 6.75 lbs (3100 g)
Weight of empty Mag-20 6.8 oz (190 g)
Features Upper and Lower Metal Receivers
RIS-Rail Interface System
On-Rail Sights

If any of you think you can buy this rifle and fit it with standard AR-15 or HK416 internals - forget it.  The rifle only has the appearance of the HK416 but none of the internals are common except for a few external cosmetic areas.

UMAREX does not state that the lower receiver is made from 7075 T6 aluminum and even if you successfully swap the interior of the lower receiver, it might fail because of the stress.  So save yourself a lot of trouble and don't even try this.

Fit and Finish:
The overall fit and finish of the rifle is top notch in matt black. 

The rifle seems to be coated in Duracoat/Guncoat or some other type of epoxy finish.  It is very tough but also smooth.  This finish covers the lower and entire upper receiver except for the gas tube (fake) and the barrel.

The finish is NOT adonization of any kind which is typical on most AR rifles.