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FAQ

FAQ

 

1. Why are your uppers more expensive than others on the internet that look the same?

2. Who makes your barrels and upper assemblies?

3. What does barrel twist rate mean?

4. What is QPQ?

5. Do I need a chrome lined or QPQ barrel?

6. Who makes your free float rails?

7. What parts do I need to have a complete rifle?

8. What configuration would be best for me?

9. What is your Warranty?

10. What is your accuracy guarantee?

11. What do I do if my rifle/parts arrive damaged?

12. What do I do if I have this problem with my rifle/assembly?

13. Will your stuff fit my stuff?

14. Is 5.56 the same as .223?

15. What other calibers than 5.56 are available?

16. Do you sell piston systems?

17. Why are there sometimes price differences depending on where I look?

18. Will you build my assembly using my components?

19. How long have you been in business?

20. How long is your processing time? 

21. What is the difference between a A2 Front sight and a F-Marked?

22. Do you use taper pins to install your Front Sight Base?

23. Are your barrels coated (finished) under the Front Sight Base?

24. Gas Port Sizing

 

 

1. Why are your uppers more expensive than others on the internet that look the same?

 

It is because of quality factors that are not readily apparent from looking at a picture on the internet or at a photo in an ad. Although all AR-15 style rifles are theoretically built to the same dimensional specifications, there are significant differences in manufacturing processes that greatly affect the quality of the product. For more details on what this means, read the About Us page.

Everything TNTE Sales Inc. uses in our builds is made in America from top quality manufacturers like DTI (Del-Ton), Anderson, Yankee Hill Machine (YHM), Aero Precision, and CMMG. TNTE machines nothing on our own and we do not use machine shops located in pole barns behind someone’s home that specialize in cranking out low-end commercial grade parts. We let those who have years of experience and high quality control measures already in place make our stuff.

 

2. Who makes your barrels and upper assemblies?

 

The question here isn’t really who makes the barrel blank, but who machines the barrel blank and upper receiver into a finished product. Our Chrome Moly barrels are ESS 41v40 steel, our Chrome Lined and QPQ Barrels are 41v50 11595E Mil-Spec quality Steel unless otherwise noted. Our suppliers cut, finish, and chamber all our barrels unless otherwise noted. TNTE Sales Inc. assembles, times, headspaces, and function test fires each barreled upper (not every third or fifth as some suppliers might) unless otherwise noted. Continental Machine and Tool (CMT), and other US Government Contract Parts Houses manufacturer our bolt carrier group assemblies to our highest specifications: All TNTE bolts are shot peened and High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) and contain the heavy duty black extractor spring insert. TNTE Sales Inc. then adds a Mil-Spec Viton(r) O-ring to the extractor spring assembly to virtually eliminate failures to extract.

 

TNTE Sales Inc. inspects and hand assembles each upper assembly to strict tolerances and function tests the complete unit again to ensure that only the most accurate, durable, and reliable upper assembly is delivered to you. When your upper gets to you, you know your upper works and works well!

 

3. What does barrel twist rate mean?

 

Barrel twist rate is a measure of how fast the rifling inside the barrel spins the bullet in order to stabilize it in flight and thus make it more accurate. A 1 in 9 (1:9) twist rate means the barrel rifling completes one revolution every nine inches of barrel. If the twist rate is too slow, the bullet will “wobble” in flight and thus be significantly less accurate. If the twist rate is too fast, the high rpms can cause the jacket of the bullet to fail-- centrifugal force literally tears the metal jacket off of the bullet core.

 

What barrel twist rate is ideal for you is determined by what type of shooting you wish to do. Generally, the heavier the bullet you wish to shoot, the faster the twist rate needed to stabilize it in flight (Stabilization is actually dependent on the length of the bullet not necessarily the weight. For most practical purposes, the heavier bullets tend to be longer). TNTE Sales Inc. recommends the following as a general guideline:

 

 

1 in 9 twist rate (1:9)       45 gr. to 69 gr. bullets

 

1 in 8 twist rate (1:8)       45 gr. to 77 gr. bullets

 

1 in 7 twist rate (1:7)       55 gr. to 80+ gr. bullets

 

 

 

 

 

NOTE: The maximum bullet weight that can be fired from the standard GI magazine due to the overall length of the cartridge is 77 gr. Any cartridge with a bullet heavier than 77 gr. will not fit in the magazine and will need to be loaded individually by hand.

 

 

4. What is QPQ?

 

 

 

QPQ stands for quench, polish, then quench again to ensure the entire barrel is coated. It is a salt-bath nitride, which provides for a longer barrel life than chrome-lining. The barrel extensions are installed but not torqued to spec until after the QPQ process is complete, to ensure the extension will not come loose. The QPQ process has shown to have much better resistance to throat erosion than chrome lining, without affecting accuracy.

 

 

 

5. Do I need a chrome lined or QPQ barrel?

 

For certain applications, it is the only way to go. Those applications are primarily full-automatic applications where you will shoot a lot of bullets in a rather short period of time. The military is interested in a barrel life of over 8,000 rounds (up to 12,000 rounds) so thus they require chrome lining. With new technologies, the standard chrome-moly barrels now combine the best of a standard steel barrel with the addition of chrome in its mixture. A properly maintained chrome-moly barrel today has an upper life of over 8,000 rounds. That is a lot of bullets.

 

Chrome lining was originally applied to barrels to prevent corrosion when the ability to properly lubricate your barrel was not always available. Today, however, so much lubricant is built into modern ammunition that the best way to protect your barrel is to pull the trigger every now and then.

 

Chrome lined barrels are also less accurate than standard CM barrels, QPQ, or stainless steel barrels. The military is thrilled with being able to hit a dinner plate at 300 yards. As a chrome lined barrel wears, this is not a bad average. Most civilian and law enforcement applications require greater accuracy.

 

TNTE Sales Inc. recommends spending nearly the same amount of extra money on a QPQ barrel where you get increased barrel life and increased accuracy rather than settling for the draw-backs of chrome lining.

 

6. Who makes your free float rails and sights?

 

TNTE Sales Inc. usesfree float rails and detachable sights from YHM, UTG, Troy, and Midwest Industries.

 

7. What parts do I need to have a complete rifle?

 

In order to put together your own custom rifle, all you need is a complete upper assembly and a complete lower assembly. The two assemblies attach together via two pins, the pivot pin and the takedown pin. It is that easy!

8. What configuration would be best for me?

 

That would depend on the reason(s) you want an AR style rifle. Contact us and we would be happy to discuss your needs and make a recommendation. sales@tntesales.com or 262.749.1370

 

9. What is your Warranty?

 

Our complete custom upper assemblies have a limited life time warranty against manufacturer defects (normal wear and tear is not covered). Upper assemblies without BCG and charging handle are covered with a one year limited warranty. Parts have a 30-day warranty. We will repair and/or replace any upper that is defective due to manufacturer defect. If the problem determined to be caused by customer supplied components (i.e. customer supplied BCG, charging handle, improper installation, & etc.), customer will be responsible for all shipping costs, charged for all repairs (parts, ammunition, and shop time) at our current rate. Current rate is $55 per hour with a minimum one-hour charge.

 

10. What is your accuracy guarantee?

 

Our accuracy guarantee is as good as you can shoot. It is unlikely that you can shoot better than our rifles will allow you to. With all the variables, like you, the ammunition, wind, temperature, and humidity, we would recommend you read the “fine print” of any accuracy guarantee that anyone else gives you.

 

Essentially there is no accuracy guarantee except as more of a function of how we treat our customers. If you discover a manufacturing defect that we missed, contact TNTE Sales Inc. at the time you receive your assembly, or after, we want you to call us. It is in our and our supplier’s best interest to know if there is a glitch in the manufacturing process. We will be happy to direct you on how to return the item for inspection and exchange.

 

11. What do I do if my rifle/parts arrive damaged?

 

We will assist you in every way possible with any problem you may have. If product arrives damaged from shipping, you must immediately call UPS as they carry insurance to cover products damaged during shipping. It left our hands intact and operational, so if it arrives damaged it happened during shipping. Get on the phone to UPS first. There is nothing else we can do.

 

12. What do I do if I have this problem with my assembly?

 

A. Question: I am having failure-to-feed issues! Answer: Try several different magazines and several different types of ammunition (Don’t just switch from box 1 of cheap surplus ammo to box 2 of cheap surplus ammo. Switch to new commercial ammo from different manufacturers). This should take care of the problem. We function tested the assembly before we shipped it to you. When it shipped your upper worked perfectly.

 

B. Question: Upon extraction, I wind up with ripped-out shell casings remaining in the chamber!

Answer: Clean the chamber. Lubricate the chamber area correctly. If necessary, gently buff the chamber area with a light compound such as Flitz. Stop using cheap surplus ammo. We function tested the assembly before we shipped it to you. When it shipped your upper worked perfectly.

With the process, we go through of individually inspecting each part, hand assembling each upper, and function testing each assembly, manufacturer’s defects should be extremely rare. The only variables from our shop to you are the ammunition, the magazines, and the lubrication/cleanliness of the product. With proper cleaning and lubrication, especially when your assembly is new, the above steps should solve 99 out of 100 problems. If it doesn’t, give us a call and we will make it right. We are in business to do what is right and fair. We ask you to do the same. TNTE Sales Inc. is in business to earn your trust and your repeat business.

 

13. Will your stuff fit my stuff?

 

That depends on what you have. We sell only USGI dimensioned parts and assemblies so they will fit any other USGI dimensioned AR-15 style rifle. Only you know what you have so the answer depends on you.

 

14. Is 5.56 the same as .223?

 

Although .223 is the civilian designation of the 5.56 x 45 NATO round, they are not identical. A barrel chambered for 5.56 NATO can safely shoot .223 ammunition, but a barrel chambered for .223 Remington cannot safely shoot 5.56 NATO. ALL TNTE 5.56 BARRELS ARE CHAMBERED 5.56 NATO unless noted.

 

15.   What other calibers than 5.56 are available?

 

There are many other calibers available for your AR style rifle that require only a different upper assembly and a different magazine to function. TNTE Sales Inc. can build assemblies in 5.56, 308win (.243win, 6.5 Creedmoor, AR-308 based etc...), 300AAC, 6.5 Grendel, 9mm, 7.62mm x 39, 6.8mm and .22 LR. 308.

 

16. Do you sell piston systems?

 

Yes, we can get upper assemblies and even get conversion kits for your existing upper assembly. Give us a call or send us an email to check on pricing and availability sales@tntesales.com or call 262.749.1370

 

17. Why are there sometimes price differences depending on where I look?

 

We do our best to keep prices on the website accurate and up-to-date. However, we are human and sometimes mistakes happen, we correct this by saying we are sorry and then stating the correct price. Sometimes we fail, so if you want the latest on anything, check the website and then give us a call or send us an email.

 

18. Will you build my assembly using my components?

 

Yes, we will use any quality component that the customer would like to provide.

 

19. How long have you been business?

 

We were established in 2010.

 

20. How long is the Processing Time?

 

We are a small shop so please be patient while we process your order. Typically, our parts orders leave in 5-7 business days. Barrels and BCG's that are not special order may take 7-10 business days.

 

Production uppers may take 15-30 business days; custom uppers may take up to a year. Business days are Monday through Friday. We do not ship on Saturday, Sunday, or Monday. In times of high demand this time may be extended.

 

Business days are counted as Monday through Friday excluding Federal Holidays.

 

Our website does not display live inventory, while we stock most of our products we may run out from time to time. We will notify you as soon as we know of a problem.

 

21. What is the difference between a A2 Front sight and a F-Marked?

 

About .040 in height, Simplest answer is to use a F-Marked for a Flattop A3 upper, and a A2 for a fixed carry handle.

 

 

22. Do you use taper pins to install your Front Sight Base?

 

Yes.

 

 

23. Are your barrels coated (finished) under the Front Sight Base?

 

Yes, we install the FSB after the barrel is finished per Mil-Spec.

 

24. Gas Port Size

Our 10.5" 5.56 barrels use a .087 gas port

14.5"-16" .0625 and 20" .093