My 18" SPR Build for the New Year

[rgiffour 1]

Started as a simple PSA lower for $50 last month..

 

Just ordered up this weekend:

 

DPMS MK12 556 NATO 1/8 (6 groove) SS Black 18" Barrel

DPMS Levang Linear Comp/Brake (will be pinned/welded)

PSA MOE LPK kit.

Spikes Upper Receiver

DPMS Rifle Gas Tube

Model 1 Charging Handle

DPMS A2 stock assembly kit

Troy 15" Extreme Battle Rail

 

$590 total..

 

got a new Spikes BCG here that I got in my BCM 14.5" Middy.. so GTG in that dept for now..

 

should look kinda like this one.. (Troy 15" and Levang Comp however)

 

 

What say the crowd ??

[IS45 1]

Started as a simple PSA lower for $50 last month..

 

 

What say the crowd ??

Happy New Year!

[Dan 177]

Only think I'd say is to look at a SPR worthy trigger / FCG. I'm very happy with my Geissele SSA-E and SD3G, but there are plenty of other good options out there as well.

 

Should be fun assembling yourself. Do you have the necessary vice blocks and tools for attaching the barrel to the upper receiver?

[rgiffour 1]

Yes.. got the vise.. Upper Clam and barrel wrenches and such..

 

Trigger may be a next year project..

[rgiffour 1]

I got some things in today.. hopefully the barrel gets here before Saturday.. kinda important..

 

ordered a Bushnell Trophy XLT 3-9x40 DOA 600 scope for it and a MagPul MBUS set..

 

[rgiffour 1]

Well today was D-Day..

 

I mounted the Spikes upper loosly in the clam-shell while awaiting the barrel via the mail.

 

 

The when the barrel came in I checked it out abit..

 

has DPMS 5.56 M-12 1/8 stamped on it.. and the barrel was dimpled for a gas block.

 

 

the barrel extension was nice and had the M4 ramps.

 

 

then I slid the barrel, aligned the pin, and greased the upper threads abit..

 

 

then tighten the Troy supplied barrel nut to 30-60 ft lbs. (mine was 42.)

 

[rgiffour 1]

Then I oil up where the gas block sits so it goes on better and mark the barrel with pencil to help with aligning the gas tube.

 

 

then put the gas block on and snug the bottom setscrews. use a roll-pin punch to start the gas tube roll pin.

 

 

then mount the Troy FF tube about 1 hair off center and then twist to align with the upper rail.

 

 

the M4 feedramps aligned great with the upper.

 

 

to align and tighten the FF rail.. I used a HARD FLAT surface and put it FACE DOWN on my table.

 

take time and slowly tighten the allen head screws.. the rail is aluminum.. listen for the metal to grown and tighten them as evenly as possible.. leave about 1/8" gap per the directions as not to ruin it..

 

if you leave the screws too lose it will feel like the FF rail is going to fall off.. again.. keep tightening it SLOWLY..

 

here it is finished..

 

[rgiffour 1]

I'm still waiting for the A2 stock to come in.. but I have a pinned stock here I can test it out with..

 

heres a pic with the new Bushnell Trophy XLT 3-9x40 600 DOA Scope mounted.

 

[Dan 177]

Nice, thanks for the writeup with pics!

[rgiffour 1]

Thanks.. just got the Levang Linear Comp/Brake installed and pinned up..

 

Be taking to the range next weekend..

 

 

[rgiffour 1]

The SGuide finally shipped my A2 stock after 2 weeks.. should be in hand Saturday for update here..

 

As a side note I fired 5 rounds of the PMC XTAC 556 NATO without any issues at 40 yards with the MBUS.. smacked a dead tree.

 

Its a very soft push back and very easy to recover for the next shot.. I think the rifle length gas system helps too..

[rgiffour 1]

Fianally got my A2 stock in..

 

 

I did the oil on the stock trick after the pic was taken to darken it up..

 

Here its got the PSA lower with MOE grip and A2 stock finally..

 

The scope is awaiting the proper scope mount.. I will update Mon/Tuesday when I get it squared up.

[raz-0 1,259]

The SGuide finally shipped my A2 stock after 2 weeks.. should be in hand Saturday for update here..

 

As a side note I fired 5 rounds of the PMC XTAC 556 NATO without any issues at 40 yards with the MBUS.. smacked a dead tree.

 

Its a very soft push back and very easy to recover for the next shot.. I think the rifle length gas system helps too..

 

Well it isn't the comp. The levang is only slightly better than no comp at all. If that, depending on who you listen to.

 

A nice article on comps. http://www.scribd.com/doc/22829785/AR15-Compensators-pt-2

[rgiffour 1]

Like I said it pushes back.. and the DB rating test is 3db less then the Standard A2 FH.. (per you tube's)

 

I run the Miculek on the BCM. (which is un-godly loud on the left/right)

 

Pic from this AM.. oil worked pretty good to darken the stock abit..

 

[rgiffour 1]

All together with scope mouted up.