Yeah from what I've been reading, it really seems like the 11.5 or the 12.5 is a solid bet if you are looking for something short than 14.5I had a DD Mk18 - I believe it was 10.3". Not knowing better, I first shot it unsuppressed at an indoor range - RO got a lot of complaints about our SBR - it was loud and concussive. Once I spun my can on, it was fine. Now I am looking for a shorter barrel setup again and am thinking it will be a 11.5-12.5 after reading a lot. The 10.3 I had was also overpassed.
The problem is if the NFA gets what it wants braces won't be available this summer and beyond. And you'll be a felon if you have one.I won't SBR another rifle lower when pistol braces are still available. Other than a greater length of pull on the SBR, I don't see a need unless you run a suppressor.
Great topic, although there are several YouTube videos and postings on other forums which beat this to death...without really answering the question. Most seem to say something vague like "buy this and try this to see if you like it". Well, I don't know about you, but I prefer not to waste a lot of $$$ on barrels and gas systems I will not use. I have used 7.5", 8.5", and 10.5" barrels on AR15 SBR's with and without Suppressors. Muzzle blast with the 7.5" was rough without a Suppressor. The 10.5" with a blast can (like those from Midwest Industries) was OK, and allowed me to turn around in a residential hallway without dropping the gun. The 8.5" seemed "just right", but Muzzle Velocity was a bit too low for down range energy to allow M855 62gr. bullets to be most effective. All of these that I have found use a Pistol Length gas tube or piston, so Dwell Time is about the same across the board. On balance, I feel for my LEO purposes the 10.5" with a blast can is the best way to go. Good luck & stay safe!Does anybody have any specific preference any SBR barrel lengths they prefer (10.5, 11.5, 12.5, 14.5) for a general purposes, home defense, etc? I know there a re a lot of videos talking about various pros and cons of barrel lengths like velocity and accuracy etc. but I am curious to see what other people think in terms of SBR barrel lengths.
Great answer! You mentioned M855, is this round restricted at all by the ATF? In other words, would I be able to get my hands on it without any hassle?Great topic, although there are several YouTube videos and postings on other forums which beat this to death...without really answering the question. Most seem to say something vague like "buy this and try this to see if you like it". Well, I don't know about you, but I prefer not to waste a lot of $$$ on barrels and gas systems I will not use. I have used 7.5", 8.5", and 10.5" barrels on AR15 SBR's with and without Suppressors. Muzzle blast with the 7.5" was rough without a Suppressor. The 10.5" with a blast can (like those from Midwest Industries) was OK, and allowed me to turn around in a residential hallway without dropping the gun. The 8.5" seemed "just right", but Muzzle Velocity was a bit too low for down range energy to allow M855 62gr. bullets to be most effective. All of these that I have found use a Pistol Length gas tube or piston, so Dwell Time is about the same across the board. On balance, I feel for my LEO purposes the 10.5" with a blast can is the best way to go. Good luck & stay safe!
The M855 round is the 62gr. "Green Tip" 5.56 NATO cartridge which can be legally purchased by anyone. The M193 is the older 55gr. FMJ round used from the Vietnam era forward. I think most AR15 and M16 use these cartridges, for both performance and economical reasons. Some specialty .223 Rem loadings like the Hornady Critical Defense and Winchester Silvertip promise close range "terminal performance" advantages, but these are budget busters for LE Agencies and the Real World advantages are mostly anecdotal (due to relatively little use).Great answer! You mentioned M855, is this round restricted at all by the ATF? In other words, would I be able to get my hands on it without any hassle?
Ah okay. I wasn't sure. Mainly whenever I get ammo I just get some 55gr 5.56 made by PMC. When the price of ammo dies down a little I'll look into getting some M855.The M855 round is the 62gr. "Green Tip" 5.56 NATO cartridge which can be legally purchased by anyone. The M193 is the older 55gr. FMJ round used from the Vietnam era forward. I think most AR15 and M16 use these cartridges, for both performance and economical reasons. Some specialty .223 Rem loadings like the Hornady Critical Defense and Winchester Silvertip promise close range "terminal performance" advantages, but these are budget busters for LE Agencies and the Real World advantages are mostly anecdotal (due to relatively little use).
I buy my 5.56 in bulk of 200 to 1,000 rounds from Midway and Natchez. Either 55's or 62's are both around 70¢ per round. Belted or in stripper clips it's about 95¢ per round. Local shops near me don't seem to be able to carry much ammo inventory.Ah okay. I wasn't sure. Mainly whenever I get ammo I just get some 55gr 5.56 made by PMC. When the price of ammo dies down a little I'll look into getting some M855.
Same here with the shops. The ones near me only sell the boxes of 20, and are a lot closer to a dollar per round because it's not bulk. M855 any good for boar hunting?I buy my 5.56 in bulk of 200 to 1,000 rounds from Midway and Natchez. Either 55's or 62's are both around 70¢ per round. Belted or in stripper clips it's about 95¢ per round. Local shops near me don't seem to be able to carry much ammo inventory.
I honestly don't know what a 62gr. 0.223" MP round would do to a boar or large hog, but within 100m the terminal energy is likely only about 1,000 ft-lbs or less. Myself, I've only used 30-'06 and 45-70 Gov't on such critters. I have heard of people in AZ, NM & TX using 223 Rem on small Javelina, but can't speak to how sportsmanlike the deed ends. Please share any experiences you can!Same here with the shops. The ones near me only sell the boxes of 20, and are a lot closer to a dollar per round because it's not bulk. M855 any good for boar hunting?
Well before I go boar hunting, I'll look to see if I can find some 5.56 that's good for boars. I'll remember to get back to you on that.I honestly don't know what a 62gr. 0.223" MP round would do to a boar or large hog, but within 100m the terminal energy is likely only about 1,000 ft-lbs or less. Myself, I've only used 30-'06 and 45-70 Gov't on such critters. I have heard of people in AZ, NM & TX using 223 Rem on small Javelina, but can't speak to how sportsmanlike the deed ends. Please share any experiences you can!
12.5 is my personal preference. Gives you a great all around CQB setup. It will also allow for those longer shots and not sacrifice much on that end. Just my opinion do you research on the ballistics and performance of each lenght and choose what works for you.Does anybody have any specific preference any SBR barrel lengths they prefer (10.5, 11.5, 12.5, 14.5) for a general purposes, home defense, etc? I know there a re a lot of videos talking about various pros and cons of barrel lengths like velocity and accuracy etc. but I am curious to see what other people think in terms of SBR barrel lengths.
The 12½" barrel does yield higher velocity than very short lengths, plus has a more forgiving dwell time with a Carbine length gas system. For my LEO purposes, a short Patrol Rifle is wanted with the knowledge that it's intended to be used inside of 150-200m. A 12½" barreled 5.56 AR can be effective to 300-400m.12.5 is my personal preference. Gives you a great all around CQB setup. It will also allow for those longer shots and not sacrifice much on that end. Just my opinion do you research on the ballistics and performance of each lenght and choose what works for you.
I don't think 5.56 would be anyone's first choice for wild pig, unless you can hit the brain from whatever range you'll be shooting the pig. Not saying it wouldn't work for a headshot, I've seen people use 22lr with a head shot. I'm just saying it wouldn't be my first choice.Well before I go boar hunting, I'll look to see if I can find some 5.56 that's good for boars. I'll remember to get back to you on that.