Mid to late M16A2 barrel has a raised Bfi marking inside a diamond, can be found on left or right side:
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Later A1 buttplate with trap door for cleaning kit, intoduced in 1969. These are AR-15 PArts and usually crack when installed:
- NIGHT SIGHT -ruger 10/22 magazines - AR-15 - Magazine - gun grip - 1911 grips - AR-15 Accessories - Rifle Scope - Scope Mount- AR-15 SIGHTS - HARRIS BIPODS - AR-15 Magazines - pistol grip - Aimpoint- Red Dot Sights - Scope Mounts - AR-15 ACCESSORIES - AR-15 STOCKS - AIMPOINT MOUNT - Scope Mounts - RIFLE SLING- NIGHT SIGHTS - Ghillie Suit - Camouflage - AR-15 sights - Scope Rings- SUREFIRE- RUGER 10/22 MAGAZINES - RIFLE SIGHTS- Scope Ring - EOTECH - RIFLE SCOPE - RIFLE BIPODS - GLOW STICKS - AR-15 ACCESSORIES - NIGHT VISION - ruger 10/22 magazines - HARRIS BIPOD - RIFLE SLINGS- Scope Mount - Smith & Wesson - AR-15 - AR-15 Sights --ruger 10/22 magazins - AR-15 Magazine - - AK-47 STOCKS - RED DOT SIGHTS - AK-47 ACCESSORIES - AR-15 - Scope Rings - SUREFIRE FLASHLIGHTS- RIFLE STOCKS - AR-15 STOCKS - FOREGRIPS- GLOW STICKS - ar-15 - RIFLE STOCK - HEARING PROTECTION - fiber optic sights - Ruger 10/22