Id like one..i have never owned an ar..never even shot 1 until my buddy let me borrow his..ar's are a meh to me.....a lot will depend on cost for me
This is true. There is definitely a difference between an average Guy's AR ($600) and then a guys that has several or researched ($1500+).
I'm not saying you need to spend that much but don't buy the DPMS/Stag or anything at your Walmart.
Get a proper BCM/DD or "possibly" Colt.
Ok so I may have mis read. Your gonna spend about the same for a quality rifle but the Bren will be higher over all.
I think stag arms puts out really quality parts, but not an expert on complete rifles. Prefer their parts to DD actually. BCM is reliable, but "milspec" doesn't always mean max performance as civilian consumers typically define...
By no means an AR expert, but for complete builds, Windham would prob be my first choice for an economical gun with Aero second and Bushmaster or Stag third... FN commercial is worth mentioning, though their commercial stuff is built in same factory as military, it's built to different specs and different blueprints and on different machines so not to infringe upon their sublicense agreement of Colt plans required for them to fulfill the US military contracts/specs.
For a higher end but still affordable offering, I think it's tough to beat Colt especially their barrels, though BCM is a good equivalent on everything but barrel accuracy... DD is probably worth including at this level too.
High end, I don't know that anyone can really compete w/ noveske or larue. Knights too.
AND ranking the piston AR makers/systems is a whole other discussion...
Complete DIY, high quality with sale prices you can find in a variety of places on the web -- off the top of my head on parts and pricing:
Aero precision lower for $50.
Stag Lower Parts Kit w/ trigger for $70.
Aero precision standard upper for $100. or Aero precison M4e1 upper (effectively monolithic upper) for $125, both complete.
Aero precision railed handguards for either upper for ~$125 (rail req to complete M4e1 mono upper).
Bolt carrier group, bcm: $175
Buffer tube, stock, retainer, buffer, spring: $100 for H2 buffer, car spring, midrange magpul stock, and POF USA enhanced buffer tube.
Ballistic advantage barrel w/ gas block installed: $200
Barrel nut included w/ either of handguard options mentioned.
Gas tube: $15
Pistol Grip: $20
Muzzle device, standard A2: $20
BUIS: $100
Charging handle: $20
Total: ~$1000 for a really high end custom AR if you build
And you can easily find further cost savings in places while still having a reliable gun such as barrel, bcg, buis, stag lpk to psa, etc.
You can upgrade further on lower w/ geissele g2s trigger for $125, norgon mag release $90, Knights ambi safety $50, odin works XMR2 mag release $20, bad lever +$30, rear receiver plate w/ QD slot $20, bcm ambi charging handle $60 for a totally tricked out gun at an additional $400.
For complete uppers, as mentioned, you can get a base blem Adams Arms Piston for $500 and several of the BCM stripped uppers come in at the $500-600 range as well (with bcgs w/ both companies -- believe AA comes with buffer and perhaps buffer tube and spring too) . Then all you need is a rail/hg, sights, stock and buffer and a lower build -- which can be done for as little as $200 if you're flexible on quality.
So that's effectively 2 high quality ARs that can be built for 1 Bren carbine, which was my original point... But one can only effectively shoot one gun at a time, so YMMV. Which also ties into optics, which I didn't list as cost will be the same regardless of weapon system...