ATRS Shaun
Business Member Rep.
- Location
- Calgary, AB
Absolutely love it! ^^^
Modern Sporter photo thread
- Thread starter alberta tactical rifle
- Start date
BCreserveMP
Regular
- Location
- Victoria, BC
It's finally done... the "Econorexic" F/A Modern Sporter.
Objective was to build a sub-6lb rifle for under $2500. And I did - just barely! 5.99lbs with no mag or optic, and $2481.67 (before taxes and shipping). Waiting for sales and "re-purposing" a couple of generic bits I already had brought me in just about $20 under budget!
With the Vortex Venom and alloy BUIS strapped on, it's 6.2lbs.
Everything went together pretty seamlessly. I know this has already been said many times, but the fit and finish of the ATRS components are second to none. Truly great workmanship. Definitely worth the wait. There were a couple of minor fitment issues, but primarily because of the parts, not the upper/lower. And I'm not faulting anyone - with all the thousands of parts combinations out there, there's always a chance for a slight discrepancy in fitment.
Notes: The Radian titanium forward assist needed a little finishing for free travel with the pin installed. Also, the F/A "tooth" interfered with rearward travel of the Brownells bolt carrier. a 1mm grind of that tooth was the perfect fix. And of course because I had to drift the pin in and out a few times, I managed to mar the upper with a slipped punch. D'oh. No such thing as a perfect build, right? And anyway this isn't a show pony - it's a working rancher.
The TNA dust cover won't snap closed without manually pushing down on the detent. I'm hoping after cycling everything for a while will help, otherwise I'll try compressing/cutting the detent spring a little bit.
The MRA front pin - what is the pivot pin on a traditional AR - is hella tight. Again, I'm hoping cycling it a few dozen times will remedy this.
The parts have been sitting in my safe for so long I can't actually believe this project is finally done. Off to the range on Monday to test everything out!
Top:
no-name 11" handguard
V7 titanium barrel nut
Black Creek Labs 5.56 stainless barrel (mid-length system)
Vancouver Gun Works cerakote barrel
V7 micro-brake (titanium)
Battle Arms Development gas block (titanium)
TNA dust cover assembly
Radian forward assist (titanium)
Brownells lightweight nickel boron BCG
Dimeco charging handle
Vortex Venom optic
Troy clone BUIS
Bottom:
Smith Tactics "Lightning Bolt" release
TNA LPK
V7 buffer retainer (titanium)
V7 trigger/hammer pin set (titanium)
Strike Industries Enhanced receiver extension and
Strike Industries Pit Viper buttstock
TNA carbine buffer and spring
TNA castle nut
Ebay end plate with QR mount
Maple Ridge Armoury extended pivot pin
A2 pistol grip
ALG QMS trigger
https://photos.app.goo.gl/aGU58CW26GjoJroH7
https://photos.app.goo.gl/RTWsey3Y8pzrDcfM6
https://photos.app.goo.gl/1kmPg3n7sAznDMSv8
Objective was to build a sub-6lb rifle for under $2500. And I did - just barely! 5.99lbs with no mag or optic, and $2481.67 (before taxes and shipping). Waiting for sales and "re-purposing" a couple of generic bits I already had brought me in just about $20 under budget!
With the Vortex Venom and alloy BUIS strapped on, it's 6.2lbs.
Everything went together pretty seamlessly. I know this has already been said many times, but the fit and finish of the ATRS components are second to none. Truly great workmanship. Definitely worth the wait. There were a couple of minor fitment issues, but primarily because of the parts, not the upper/lower. And I'm not faulting anyone - with all the thousands of parts combinations out there, there's always a chance for a slight discrepancy in fitment.
Notes: The Radian titanium forward assist needed a little finishing for free travel with the pin installed. Also, the F/A "tooth" interfered with rearward travel of the Brownells bolt carrier. a 1mm grind of that tooth was the perfect fix. And of course because I had to drift the pin in and out a few times, I managed to mar the upper with a slipped punch. D'oh. No such thing as a perfect build, right? And anyway this isn't a show pony - it's a working rancher.
The TNA dust cover won't snap closed without manually pushing down on the detent. I'm hoping after cycling everything for a while will help, otherwise I'll try compressing/cutting the detent spring a little bit.
The MRA front pin - what is the pivot pin on a traditional AR - is hella tight. Again, I'm hoping cycling it a few dozen times will remedy this.
The parts have been sitting in my safe for so long I can't actually believe this project is finally done. Off to the range on Monday to test everything out!
Top:
no-name 11" handguard
V7 titanium barrel nut
Black Creek Labs 5.56 stainless barrel (mid-length system)
Vancouver Gun Works cerakote barrel
V7 micro-brake (titanium)
Battle Arms Development gas block (titanium)
TNA dust cover assembly
Radian forward assist (titanium)
Brownells lightweight nickel boron BCG
Dimeco charging handle
Vortex Venom optic
Troy clone BUIS
Bottom:
Smith Tactics "Lightning Bolt" release
TNA LPK
V7 buffer retainer (titanium)
V7 trigger/hammer pin set (titanium)
Strike Industries Enhanced receiver extension and
Strike Industries Pit Viper buttstock
TNA carbine buffer and spring
TNA castle nut
Ebay end plate with QR mount
Maple Ridge Armoury extended pivot pin
A2 pistol grip
ALG QMS trigger
https://photos.app.goo.gl/aGU58CW26GjoJroH7
https://photos.app.goo.gl/RTWsey3Y8pzrDcfM6
https://photos.app.goo.gl/1kmPg3n7sAznDMSv8
Last edited:
Another one in the Sporter family from my buddy Mike.
Total weight is a rather chunky 4kg /8.8lbs without mag or optics.
1. Lantac Dragon 556/223
2. JP Enterprises Supermatch 223 Wylde, medium profile 20" with matched bolt
3. JP Industries Thermal Dissipator and JP Adjustable gas block
4. Midwest Industries 18" SP series M-Lok rail
5. Brownells BCG (but using the matched bolt from JP)
6. PWS enhanced buffer tube V2
7. JP Silent captured spring system
8. Timney Calvin Elite with gold trigger shoe pack (BCM LPK was partially used, though mostly for pins and springs)
9. BAD titanium takedown pin up front
10. Radian Titanium FA
11. Seekins Precision Ambi safety and colour matched mag release button
12. Magpul MIAD
13. Magpul ACS
14. Radian Raptor charging handle finished in Tungsten Cerakote
Total weight is a rather chunky 4kg /8.8lbs without mag or optics.
1. Lantac Dragon 556/223
2. JP Enterprises Supermatch 223 Wylde, medium profile 20" with matched bolt
3. JP Industries Thermal Dissipator and JP Adjustable gas block
4. Midwest Industries 18" SP series M-Lok rail
5. Brownells BCG (but using the matched bolt from JP)
6. PWS enhanced buffer tube V2
7. JP Silent captured spring system
8. Timney Calvin Elite with gold trigger shoe pack (BCM LPK was partially used, though mostly for pins and springs)
9. BAD titanium takedown pin up front
10. Radian Titanium FA
11. Seekins Precision Ambi safety and colour matched mag release button
12. Magpul MIAD
13. Magpul ACS
14. Radian Raptor charging handle finished in Tungsten Cerakote
BCreserveMP
Regular
- Location
- Victoria, BC
Can you ask Mike if he had any issues with the Brownells carrier not kicking the ejection port cover open?
Mumbles Marble Mouth
CGN Ultra frequent flyer
- Location
- Lower Mainland
BCreserveMP
No riser for the Vortex Venom?
No riser for the Vortex Venom?
BCreserveMP
Regular
- Location
- Victoria, BC
No, with the Pit Viper stock the rifle sits "high" in my shoulder. Cheek weld is there without much effort.
I've only put a couple of rounds downrange (to make sure it didn't explode haha). I'll try it with and without a riser, but I think without will be fine.
BTW, I LOVE the Smith Lighting Bolt. I'll be adding one to every compatible rifle I own.
Mumbles Marble Mouth
CGN Ultra frequent flyer
- Location
- Lower Mainland
I would have to see it for myself but my judgement right now would be, unless you’re the hunchback of notre dame, that can’t be comfortable to shoot.
Just got mine, apparently the first MS Mk12 Mod 0. Waiting on the rear site, but the boys at ATRS were happy to send it to me later so I could get the rifle now.
That dam a2 stock! So terrible! I love it, love the looks but cant justife the weight
Btw looks awesome!
juancarlos
CGN frequent flyer
- Location
- The Island
What barrel did you use to get it down to that weight?
MRA pencil + hand guard. TR24 optic + Aero mount. Brownells light weight BCG. If I had gone with a different grip (the ergo isn't light), and fussed over a few other bits, I think I could have gotten under 7. My goal was under 7.5. This proves what I suspected, that you don't need to spend $$$$ to get a high quality light weight build. Oh yea, the MRA comp isn't exactly light either, for sure would be under 7 if I swapped that out for something smaller. Learned this building mountain bikes, your biggest weight savings are in the biggest parts, simple. It's easy to to sucked into grams here and there, but as with anything it's that last 20% that is the hardest (and most expensive) to gain. She very likely could touch 6.5 if I went with a T2 or something. Carbon hand guard, and a super minimal stock, hello 6.
