J-B® Non-Embedding Bore Cleaning Compound Brownells

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J-B® Non-Embedding Bore Cleaning Compound Brownells.

Availability :
In Stock
The original, time-proven formula developed by Jim Brobst and produced under exclusive license. J-B has been getting burned-on, caked-in powder residue and ...

Cuts Through Toughest Bullet Jacket & Powder Fouling - Can't-Run Paste Formulation - Cushioned Abrasive Action Leaves Bores Sparkling - Won't "Eat" Stock Finishes

The original, time-proven formula developed by Jim Brobst and produced under exclusive license. J-B has been getting burned-on, caked-in powder residue and copper jacket fouling out of gun barrels since the 1960’s, and hasn’t damaged an inch of rifling yet. Today, J-B once again proves itself a champion by the way it easily cleans the dirtiest, moly-fouled barrels.

A unique combination of ingredients and a one-of-kind, multi-step mixing process give J-B its special characteristics. They work together to cushion the abrasive action; the soft paste liquifies as you use it, then wipes out of the bore easily. The non-embedding feature means there’s no abrasive residue left behind which might keep "cutting" after you’ve finished cleaning.

J-B has been a favorite on gunsmiths’ benches for years, as a "magic" cure for customer guns that "...just won’t shoot anymore". These pros know that a good scrubbing with J-B often restores accuracy. Match and varmint shooters put a lot of rounds down range, many of those using moly coated bullets. The large amounts of copper fouling and the burned-in moly can create a cleaning nightmare; J-B makes short work of it. Use J-B with the Lewis Lead Remover to get the last speck of leading out of pistol bores. Shotguns combine lead, powder and plastic fouling to really throw patterns off; J-B cleans it all out quickly and easily.

Here’s what a couple of the most respected names in the shooting industry have said about J-B. Jim Carmichel, gun writer and dedicated shooter, "I have used J-B for years and routinely use it even on my very finest benchrest rifles. When no other bore cleaner will get the job done, J-B will." The late Warren Page, a benchrest shooting legend, wrote the praises of J-B when it was first introduced to the shooting public. He said, " J-B is an ultra mild, abrasive oil paste, finer than jewelers’ rouge, which we in the rifle accuracy shenanigan, a few years ago, found was the answer to problems of metal fouling and serious powder fouling that solvents either won’t touch, or will cut only by much labor." And, "... it was quickly discovered that such an extremely fine abrasive, used with discretion, would take out caked powder residue and mild metal streaking without ruining the bore."


1911, Issue:04, Page:059
AR-15, Issue:04, Page:073
Big Book Catalog, Issue:71, Page:348
Sinclair, Issue:5B, Page:149

SPECS: 2 oz. (57 g) net contents jar. or ¼ oz. (7 g) net contents jar. Carton contains 12, 2 oz. jars.

M203 37mm Launcher Lewis Machine & Tool.

Availability :
In Stock
Here’s a truly unique ultra-cool way to cap off that retro rifle build or give any contemporary AR-15 a truly badass upgrade ...

Detail-Accurate Reproduction of GI-Issued Component - Available To Everyone

Here’s a truly unique ultra-cool way to cap off that retro rifle build or give any contemporary AR-15 a truly badass upgrade – the M203 37mm Launcher from LMT! An exact replica of the 40mm grenade launchers used by the U.S. Army since 1969, LMT’s M203 launches 37mm flare, smoke, or rubber ball rounds, making it completely legal for civilians to own, with NO FFL required. (The smaller caliber completely prevents the loading of military 40mm ordnance in this launcher.) Aside from adding an extra level of authenticity to a Retro Rifle, the LMT M203 37mm launcher can also be an excellent training tool for law enforcement and security personnel.

This 37mm M203 installs and operates just like its 40mm USGI big brother. Simply release the top locking lever, slide the tube forward, drop in the round, snap the tube back, and you’re ready to light up the night or lay down a smoke screen. LMT’s M203 attaches to either a standard M16A2 rifle barrels with a .625” front O.D. or an M4 carbine barrel with the grenade launcher cutout in front of the gas block, with a GI-type barrel nut at the rear.

  • Shoot 37mm flares or similar rounds ONLY
  • Fits AR-15 with M4 carbine OR 20" M16A2 rifle barrel contour
  • 7075 aluminum, mil-spec hard-anodized finish, matte black
  • Smooth-bore barrel WILL NOT accept military 40mm rounds
  • 15" OAL
  • 12" barrel
  • 3 lbs. total wt.
  • Mounting kits sold separately, see below...

LMT offers two mounting kits for the M203 37mm Launcher: a military-style kit that precisely replicates the original M204 military mount, including the replacement handguard (carbine and rifle models available) and a Quick-Detach mount that lets you easily remove the M203 from your rifle when you need it for other purposes (just as easy to reattach the launcher). Somebody go get "The Roach"...