Purebred 10.5″ 300 Blackout Barrel
From: Original price was: $235.00.$89.00Current price is: $89.00.
This Rosco Purebred 10.5″ 300 Blackout Barrel was designed for SBR/ Pistol use in conjunction with suppressors. The 10.5” Rosco barrel was made to be a direct precision replacement for any MK 18 platforms that are currently in 5.56 NATO. The 10.5” barrel is also perfect for carbines which require a slightly longer rail in order to run PEQ-15’s, D-BAL (series), or any laser aiming devices comfortably. ALL NFA RULES APPLY!
Purebred 10.5″ 300 Blackout Barrel: This Rosco Purebred 10.5″ 300 Blackout Barrel was designed for SBR/ Pistol use in conjunction with suppressors. The 10.5” Rosco barrel was made to be a direct precision replacement for any MK 18 platforms that are currently in 5.56 NATO. The 10.5” barrel is also perfect for carbines which require a slightly longer rail in order to run PEQ-15’s, D-BAL (series), or any laser aiming devices comfortably. ALL NFA RULES APPLY!
Rosco Manufacturing’s “Purebred” series is a testament to precision and quality manufacturing. We took a step back to see how we could create a barrel line that would be a culmination of all the lessons learned through years of making barrels for several OEM’s. The result is a barrel that will produce results out of the box for any shooter that is looking to take their skills above and beyond. All of our Purebred barrels are made from scratch in our Rhode Island facility and start life as a blank piece of 416R stainless steel.
Aside from making our own barrel blanks, and barrel extensions, we also hold ourselves to the most stringent quality standards. This is the only way that we can make sure that we are producing a product that will perform time after time under the demanding of situations. We are setting out to re-define the rules and we plan on letting our work do the talking…
| Barrel Length | 10.5″ | |
| Barrel Weight | 21.09 oz | |
| Barrel Material | 416 R | |
| Barrel Caliber | 300 BLK | |
| Barrel Profile |
Heavy |
|
| Twist |
1/7 |
|
|
Barrel Thread |
5/8 x 24 | |
|
Barrel Gas Block Size |
0.750 | |
|
Gas System Length |
Pistol | |
| Barrel Crown |
Step Crown |
|
| Barrel Finish |
80 Grit Bead Blast |
|
| Barrel Extension Finish |
Nickel Boron |
Additional information
| Weight | 1.5 lbs |
|---|---|
| Dimensions | 19.5 × 2.3 × 2.2 in |
Melonite Gas Tubes
| Length | Pistol Length |
|---|
2 reviews for Purebred 10.5″ 300 Blackout Barrel
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jprogers22 (verified owner) –
Happened to hear a good word about Roscoe Barrels watching a Garand Thumb video. Checked out what you had . . . and this seemed to fit the bill. After 9 months of gestation – putting it all together – I finally took her out. Your 10.5″ barrel and gas tube, nestled in an aero upper with BCM BCG. All initial runs done at 50 yards on a 20-degree day. The 5-shot groups are all within the first 100 rounds fired. Absolutely loves Sig Sauer Elite (220 gr subs and 125 supers) with groups of 0.625″. POI different of course, but same size groups. WInchester XP 150 gr and Fiocchi 150 gr FMJBT came in together as a close second with 0.75″ groups. Suspect groups will tighten over time . . . and when I am shivering a little less. For brush work and in-home-defense, this is more than acceptable. Definitely will be going with Rosco on future builds.
Steve M.P. (verified owner) –
Absolutely wonderful barrel. This is 1 of over a dozen Rosco barrels we own and as usual they have not disappointed us. The fit and finish are as always spot on. This time however we did have an issue but it has nothing to do with Rosco. Fed-x has again screwed things up. The barrel arrived 3 days late and the worse part is it arrived messed p. All but one part of the barrel was perfect. The threads appear to have been struck by something pretty hard. The first 5 threads are smashed it to the point I can not install a muzzle device. The barrel is now at the machine shop where they will rethread the barrel. What really sucks is that it is costing me almost as much as the price of the barrel. But when they are done it will be corrected. The box seemed fine when I got it but after closer inspection I noticed it had an impact bruise on the outside of the box. Next time I will open the box before I sign for it. Once I get it back and have had a chance to shoot it I will post another review. It would be great if we were able to post pictures of our builds here. I have plenty to share.