{"product_id":"spearhead-tracker-self-timing-muzzle-brake-3-port","title":"Spearhead Machine Tracker Self Timing Muzzle Brake 3 Port","description":"\u003cp\u003eSelf-timing 3-port brake; raised slanted ports above bore centerline cut ground blast and add downward compensation; linked port double expansion chamber. The hybrid top and side ports keep the muzzle down so you can watch your impacts, and the self-timing collar installs by hand. Built for lightweight hunting rifles, AR-15s, rimfire.\u003c\/p\u003e\u003ch3\u003eFitment \u0026amp; notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTwo body profiles depending on thread pitch\u003c\/li\u003e\n\u003cli\u003eM15x1 fits CZ 600 Alpha \/ Ergo \/ Trail metric-thread models only (CZ 600s can be M15x1 or 5\/8-24, check yours)\u003c\/li\u003e\n\u003cli\u003e.30\/7mm bore accepts up to .30 cal and 7.62×39\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable class=\"spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eDesign\u003c\/th\u003e\n\u003ctd\u003e3-port self-timing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e.840\" brake body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e2.340\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdded length\u003c\/th\u003e\n\u003ctd\u003e1.715\" forward of the muzzle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBack taper\u003c\/th\u003e\n\u003ctd\u003eVaries by option (see below)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eVaries by option (see below)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e17-4 PH stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInstallation\u003c\/th\u003e\n\u003ctd\u003eSelf-timing locking collar, tensioning key included; no tools needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLeveling\u003c\/th\u003e\n\u003ctd\u003eLeveling flat on the bottom for precise leveling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eLightweight hunting rifles, AR-15s, rimfire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eAvailable options\u003c\/h3\u003e\u003ctable class=\"spec-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread Pitch\u003c\/th\u003e\n\u003cth\u003eBore (Caliber)\u003c\/th\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eBack taper \/ collar\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\/8-24 Non tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e.30\/7mm\u003c\/td\u003e\n\u003ctd\u003eBlack Nitride\u003c\/td\u003e\n\u003ctd\u003e72 g \/ 2.54 oz\u003c\/td\u003e\n\u003ctd\u003e.875\" straight (no taper)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\/8-24 Non tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e6.5mm\u003c\/td\u003e\n\u003ctd\u003eBlack Nitride\u003c\/td\u003e\n\u003ctd\u003e72 g \/ 2.54 oz\u003c\/td\u003e\n\u003ctd\u003e.875\" straight (no taper)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\/8-24 Non tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e.22LR\/.223\/6mm\u003c\/td\u003e\n\u003ctd\u003eBlack Nitride\u003c\/td\u003e\n\u003ctd\u003e72 g \/ 2.54 oz\u003c\/td\u003e\n\u003ctd\u003e.875\" straight (no taper)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM15x1 Tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e.30\/7mm\u003c\/td\u003e\n\u003ctd\u003eBlack Nitride\u003c\/td\u003e\n\u003ctd\u003e70 g \/ 2.47 oz\u003c\/td\u003e\n\u003ctd\u003eBack tapered to .750\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\/2-28 Tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e.22LR\/.223\/6mm\u003c\/td\u003e\n\u003ctd\u003eStainless\u003c\/td\u003e\n\u003ctd\u003e79 g \/ 2.79 oz\u003c\/td\u003e\n\u003ctd\u003eBack tapered to .750\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\/2-28 Tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e6.5mm\u003c\/td\u003e\n\u003ctd\u003eStainless\u003c\/td\u003e\n\u003ctd\u003e79 g \/ 2.79 oz\u003c\/td\u003e\n\u003ctd\u003eBack tapered to .750\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\/2-28 Tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e.30\/7mm\u003c\/td\u003e\n\u003ctd\u003eStainless\u003c\/td\u003e\n\u003ctd\u003e79 g \/ 2.79 oz\u003c\/td\u003e\n\u003ctd\u003eBack tapered to .750\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\/2-28 Tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e.22LR\/.223\/6mm\u003c\/td\u003e\n\u003ctd\u003eBlack Nitride\u003c\/td\u003e\n\u003ctd\u003e79 g \/ 2.79 oz\u003c\/td\u003e\n\u003ctd\u003eBack tapered to .750\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\/2-28 Tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e6.5mm\u003c\/td\u003e\n\u003ctd\u003eBlack Nitride\u003c\/td\u003e\n\u003ctd\u003e79 g \/ 2.79 oz\u003c\/td\u003e\n\u003ctd\u003eBack tapered to .750\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\/2-28 Tapered locking collar\u003c\/td\u003e\n\u003ctd\u003e.30\/7mm\u003c\/td\u003e\n\u003ctd\u003eBlack Nitride\u003c\/td\u003e\n\u003ctd\u003e79 g \/ 2.79 oz\u003c\/td\u003e\n\u003ctd\u003eBack tapered to .750\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eChoose a bore that matches or exceeds your caliber.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eMake sure the firearm is completely unloaded.\u003c\/li\u003e\n\u003cli\u003eConfirm the brake bore matches or exceeds your caliber.\u003c\/li\u003e\n\u003cli\u003eRemove the factory thread protector or muzzle device, and any O-ring on the threads.\u003c\/li\u003e\n\u003cli\u003eThread on the locking collar and brake, time the brake by hand, then lock it with the included tensioning key.\u003c\/li\u003e\n\u003cli\u003eRemove the key after tightening.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003ePrecision machined by Spearhead Machine in Canada.\u003c\/p\u003e","brand":"B\u0026B Firearms","offers":[{"title":"5\/8-24 Non tapered locking collar \/ .30\/7mm \/ Black Nitride","offer_id":67387974844706,"sku":"SPH-7509-5-8-24-30-7MM-BLACK-NITRIDE","price":121.96,"currency_code":"USD","in_stock":true},{"title":"5\/8-24 Non tapered locking collar \/ 6.5mm \/ Black Nitride","offer_id":67387974877474,"sku":"SPH-7509-5-8-24-6-5MM-BLACK-NITRIDE","price":121.96,"currency_code":"USD","in_stock":true},{"title":"5\/8-24 Non tapered locking collar \/ .22LR\/.223\/6mm \/ Black Nitride","offer_id":67387974910242,"sku":"SPH-7509-5-8-24-22LR-223-6MM-BLACK-NITRIDE","price":121.96,"currency_code":"USD","in_stock":true},{"title":"M15x1 Tapered locking collar \/ .30\/7mm \/ Black Nitride","offer_id":67387974943010,"sku":"SPH-7509-M15X1-30-7MM-BLACK-NITRIDE","price":121.96,"currency_code":"USD","in_stock":true},{"title":"1\/2-28 Tapered locking collar \/ .22LR\/.223\/6mm \/ Stainless","offer_id":67387974975778,"sku":"SPH-7509-1-2-28-22LR-223-6MM-STAINLESS","price":121.96,"currency_code":"USD","in_stock":true},{"title":"1\/2-28 Tapered locking collar \/ 6.5mm \/ Stainless","offer_id":67387975008546,"sku":"SPH-7509-1-2-28-6-5MM-STAINLESS","price":121.96,"currency_code":"USD","in_stock":true},{"title":"1\/2-28 Tapered locking collar \/ .30\/7mm \/ Stainless","offer_id":67387975041314,"sku":"SPH-7509-1-2-28-30-7MM-STAINLESS","price":121.96,"currency_code":"USD","in_stock":true},{"title":"1\/2-28 Tapered locking collar \/ .22LR\/.223\/6mm \/ Black Nitride","offer_id":67387975074082,"sku":"SPH-7509-1-2-28-22LR-223-6MM-BLACK-NITRIDE","price":121.96,"currency_code":"USD","in_stock":true},{"title":"1\/2-28 Tapered locking collar \/ 6.5mm \/ Black Nitride","offer_id":67387975106850,"sku":"SPH-7509-1-2-28-6-5MM-BLACK-NITRIDE","price":121.96,"currency_code":"USD","in_stock":true},{"title":"1\/2-28 Tapered locking collar \/ .30\/7mm \/ Black Nitride","offer_id":67387975139618,"sku":"SPH-7509-1-2-28-30-7MM-BLACK-NITRIDE","price":121.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/0896\/1058\/files\/Tracker-06.jpg?v=1790456771","url":"https:\/\/bnbfirearms.com\/products\/spearhead-tracker-self-timing-muzzle-brake-3-port","provider":"B\u0026B Firearms","version":"1.0","type":"link"}