I'm looking to build a second AR and looking for suggestions as to which direction to go in.  I just put in an order with Midwest PX.  Incoming:

• Mega Arms GTR-3H billet lower
• Mega Arms complete billet upper receiver
• WMD Guns NiB-X full auto BCG
• MIdwest PX lower parts kit
• ALG QMS trigger group

I currently own and shoot a Windham, ME era Bushmaster 14.5" carbine (16" OAL)  done up with the following upgrades/mods:

• Troy medieval muzzle brake
• GG&G gas block/front sight and flip up rear sight
• Weaver Classic Extreme 1.5-4.5x24 with illuminated reticle & dust caps
• LaRue SPR-E mount
• BCM extractor upgrade
• Ergo grip
• Magpul fixed carbine stock
• Magpul MOE handguard
• Mil-Spec buffer tube
• ALG QMS trigger group

Should I build another carbine but with high quality parts?  Maybe an 18" mid-intermediate SPR?  I'm lost...

 

UPDATE:

 

Went with another carbine.  Parts list and photo:

 

Mega Arms GTR-3H billet lower
Midwest PX lower parts kit w/ ALG QMS
Midwest PX Mil-Spec carbine buffer kit 
Magpul MOE Fixed Carbine stock 
BCM Gunfighter grip MOD1
Mega Arms complete upper M0304
WMD Guns NiB-X full auto BCG 
Magpul MBUS Gen 2 front sight
Magpul MBUS Gen 2 rear sight
BCM standard 14.5" mid-length gas barrel .625"
Gas tube - mid length
BCM Gunfighter charging handle with Mod4 latch
BCM Gunfighter compensator Mod1
BCM KMR13 13" KeyMod rail
BCM low profile gas block .625"
 

here's what i would do.  the total is  $2477.06

 

 

buy this for the bushmaster and move the carbine stock over to the mega lower

 

http://midwestpx.com/product_info.php?cPath=22_102&products_id=833

http://midwestpx.com/product_info.php?cPath=22_120&products_id=748

 

that will finish the lower on the mega arms and bushmaster, you won't need to do anything else to them unless you want to upgrade the trigger

 

complete the mega arms upper with these parts to make a nice 14.5" build 

 

http://www.bravocompanyusa.com/BCM-14-5-Mid-Length-LIGHT-WEIGHT-Barrel-Stripped-p/bcm-brl-s-mid-14lw%20std.htm 

http://www.bravocompanyusa.com/BCM-Low-Profile-Gas-Block-p/bcm-lgb-.625.htm

http://www.bravocompanyusa.com/AR15-mid-length-gas-tube-p/gas%20tube%20-%20mid%20length.htm

http://www.bravocompanyusa.com/BCMGUNFIGHTER-Compensator-MOD-1-5-56-p/bcm-gfc-mod-1-556.htm

http://www.gandrtactical.com/cgi-bin/commerce.cgi?preadd=action&key=ALG_SHIM&reference=/cgi-bin/commerce.cgi%3Fsearch%3Daction%26keywords%3D%26searchstart%3D0%26template%3DPDGCommTemplates/FullNav/SearchResult.html%26category%3DALGD

http://www.gandrtactical.com/cgi-bin/commerce.cgi?preadd=action&key=NSR_RAIL&reference=/cgi-bin/commerce.cgi%3Fsearch%3Daction%26keywords%3D%26searchstart%3D0%26template%3DPDGCommTemplates/FullNav/SearchResult.html%26category%3DNRIF

http://www.bravocompanyusa.com/Troy-Folding-Battle-Sight-Front-p/troy%20front%20sight%20rail%20mount%20m4.htm

http://www.bravocompanyusa.com/Troy-Folding-Battle-Sight-REAR-p/troy%20rear%20sight%20-%20rear.htm

http://www.bravocompanyusa.com/BCM-GUNFIGHTER-Charging-Handle-GFH-Mod-4-p/bcm%20gfh%20mod%204%20556.htm

http://www.gandrtactical.com/cgi-bin/commerce.cgi?preadd=action&key=12841

 

that will complete the mega build

 

then take the bushmaster upper, remove the gas block flip up sight and put the old front sight post back on it.  

add new compensator

http://www.bravocompanyusa.com/BCMGUNFIGHTER-Compensator-MOD-1-5-56-p/bcm-gfc-mod-1-556.htm

 

put that flip up front sight on this 

 

http://www.bravocompanyusa.com/BCM-Upper-Receiver-assembly-M4-Flat-Top-p/bcm4-ur-m4.htm

http://www.bravocompanyusa.com/BCM-18-SPR-SS410-Barrel-with-Rifle-Length-Gas-p/bcm-recbrl%2018ss.htm

http://www.bravocompanyusa.com/BCMGUNFIGHTER-Compensator-MOD-1-5-56-p/bcm-gfc-mod-1-556.htm

http://www.bravocompanyusa.com/MI-SSK-Key-Mod-Series-One-Piece-Free-Float-Handgua-p/mi-ssk-12.htm

http://www.bravocompanyusa.com/BCM-GUNFIGHTER-Charging-Handle-GFH-Mod-4-p/bcm%20gfh%20mod%204%20556.htm

http://www.bravocompanyusa.com/BCM-Bolt-Carrier-Group-MPI-Auto-M16-p/bcm-bolt-carrier-group-auto-mp.htm

 

 

also, buy a windham from steve once this is all done.  

also, buy a windham from steve once this is all done.  

 

i Agree with your last statement

I would go with something along the lines of SPR.

Thanks for the order!

 

SPR type builds seem to be pretty popular and with good reason. They're handy rifles that are a lot of fun to shoot at longer distances. I have a safe full of general blaster type builds but the SPR is the one I reach for when I want more than just running CQ drills. It would also give you the option of getting into 3 Gun competitions.

rich.  seems like everyone agrees. you're building an 18"

 

midwest might as well put a magpul rifle stock and a2 buffer tube kit in a box

rich. seems like everyone agrees. you're building an 18"

 

midwest might as well put a LUTH-AR rifle stock and a2 buffer tube kit in a box

^^^I fixed that for ya.

^^^I fixed that for ya.

nah.  for 2 reasons.  

 

i know rich and he likes things simple

that thing is ugly as hell

nah.  for 2 reasons.  

 

i know rich and he likes things simple

that thing is ugly as hell

I personally find the luth to be quite attractive.

Pardon the dumb question but what exactly is an SPR build, special purpose rifle?  Is it strictly an 18" barrel? 

 

Thanks in advance!

Yes, it's a Special Purpose Rifle.  It can be as long as you want it to be, but I believe the armed forces' SPR's are 18" in length.

If youre looking for the military specs look here...I wanted to go the clone route for the MK12 SPR, but quickly realized it would cost me another $1500 to do it right...so for now my SPR is MK12 "inspired"

 

Http://www.MK12.net

Alright, so I was trying to make myself build something other than a carbine because I already own one, but I really don't have a need for anything else.  I'm going to build another carbine and have it be strictly red dot/holo sight & BUIS and keep the Bushmaster with the 1.5-4.5x scope and BUIS.  Same platforms, different optics.

You can build a retro clone. A1 upper, thin barrel. Thats the ticket.

You can build a retro clone. A1 upper, thin barrel. Thats the ticket.

Not with the stuff he already bought. OP you may want to look into another trigger if you're going to do in SPR build. Get the ACT if you do a cqb rifle.

 

I really like my lightweight 14.5 middy.

 

Even thought is heavy as shit now

All parts ordered. Here's the rundown (part & retailer):

 

Mega Arms GTR-3H billet lower

Midwest PX

 

Midwest PX lower parts kit w/ ALG QMS

Midwest PX

 

Midwest PX Mil-Spec carbine buffer kit 34.95

Midwest PX

 

Magpul MOE Fixed Carbine stock 42.46

Midwest PX

 

BCM Gunfighter grip MOD1

Midwest PX

 

Mega Arms complete upper M0304

Midwest PX

 

WMD Guns NiB-X full auto BCG

Midwest PX

 

Magpul MBUS Gen 2 front sight

Midwest PX

 

Magpul MBUS Gen 2 rear sight

Midwest PX

 

BCM standard 14.5" mid-length gas barrel .625"

Bravo Company

 

Gas tube - mid length

Bravo Company

 

BCM Gunfighter charging handle with Mod4 latch

Bravo Company

 

BCM Gunfighter compensator Mod1

Bravo Company

 

BCM KMR13 13" KeyMod rail

Bravo Company

 

BCM low profile gas block .625"

Bravo Company

nice…time to start on the next build.  

Had a marathon assembly session today and finished it off. A lot easier than I had initially thought. Guess that's the modular beauty of these rifles.

 

The front Magpul MBUS sight seems slightly canted left. Odd as the free floating handguard is on perfectly. My guess is that, since it's a plastic sight, maybe it's slightly deformed?

 

Anyway. Now it's time to pick an optic for it.

 

It looks good.

looks great.  love that grip

Nice looking build. How much does it weigh unloaded? My guess would be between 6.5 and 7 pounds

6 lbs. 0.6 oz. unloaded. Super light weight.

 

The rear MBUS sight was the one that was canted. It was SUPER tight going onto the Mega upper. It may have stressed it a bit. I shimmed it up under the left side and it almost perfect.

 

My Bushmaster is 6 lbs. 9 oz. on the nose. Very noticable difference in feel.